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13313312020 = 2251379914903
BaseRepresentation
bin11000110011000100…
…10000010100010100
31021100211100022202101
430121202100110110
5204231201441040
610041022251444
7650626166521
oct143142202424
937324308671
1013313312020
115712021408
1226b6726b84
131342280a28
14904206148
1552dbe009a
hex319890514

13313312020 has 48 divisors (see below), whose sum is σ = 28196195328. Its totient is φ = 5280042240.

The previous prime is 13313312011. The next prime is 13313312041. The reversal of 13313312020 is 2021331331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712889 + ... + 2717791.

It is an arithmetic number, because the mean of its divisors is an integer number (587420736).

Almost surely, 213313312020 is an apocalyptic number.

13313312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13313312020 is an abundant number, since it is smaller than the sum of its proper divisors (14882883308).

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

13313312020 is a wasteful number, since it uses less digits than its factorization.

13313312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13313312020 its reverse (2021331331), we get a palindrome (15334643351).

The spelling of 13313312020 in words is "thirteen billion, three hundred thirteen million, three hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 137 274 548 685 991 1370 1982 2740 3964 4903 4955 9806 9910 19612 19820 24515 49030 98060 135767 271534 543068 671711 678835 1343422 1357670 2686844 2715340 3358555 4858873 6717110 9717746 13434220 19435492 24294365 48588730 97177460 665665601 1331331202 2662662404 3328328005 6656656010 13313312020