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13131012314420 = 22571113655894721
BaseRepresentation
bin1011111100010100110101…
…0100110001010100110100
31201111022102211021200012222
42333011031110301110310
53210114303123030140
643532145341101512
72523453504035630
oct277051524612464
951438384250188
1013131012314420
114202916143710
121580a65557898
137433314bc260
14335789b25dc0
1517b87b3105b5
hexbf14d531534

13131012314420 has 96 divisors (see below), whose sum is σ = 37023945267456. Its totient is φ = 3777953587200.

The previous prime is 13131012314393. The next prime is 13131012314429. The reversal of 13131012314420 is 2441321013131.

13131012314420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 13131012314420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131012314429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327927341 + ... + 327967380.

It is an arithmetic number, because the mean of its divisors is an integer number (385666096536).

Almost surely, 213131012314420 is an apocalyptic number.

13131012314420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131012314420 is an abundant number, since it is smaller than the sum of its proper divisors (23892932953036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131012314420 is a wasteful number, since it uses less digits than its factorization.

13131012314420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655894761 (or 655894759 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 13131012314420 its reverse (2441321013131), we get a palindrome (15572333327551).

The spelling of 13131012314420 in words is "thirteen trillion, one hundred thirty-one billion, twelve million, three hundred fourteen thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 11 13 14 20 22 26 28 35 44 52 55 65 70 77 91 110 130 140 143 154 182 220 260 286 308 364 385 455 572 715 770 910 1001 1430 1540 1820 2002 2860 4004 5005 10010 20020 655894721 1311789442 2623578884 3279473605 4591263047 6558947210 7214841931 8526631373 9182526094 13117894420 14429683862 17053262746 18365052188 22956315235 28859367724 34106525492 36074209655 42633156865 45912630470 50503893517 59686419611 72148419310 85266313730 91825260940 93792945103 101007787034 119372839222 144296838620 170532627460 187585890206 202015574068 238745678444 252519467585 298432098055 375171780412 468964725515 505038935170 596864196110 656550615721 937929451030 1010077870340 1193728392220 1313101231442 1875858902060 2626202462884 3282753078605 6565506157210 13131012314420