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131013000012 = 22321186359957
BaseRepresentation
bin111101000000011111…
…0111011101101001100
3110112011112001222101210
41322000332323231030
54121303312000022
6140104143134420
712315424061106
oct1720076735514
9415145058353
10131013000012
1150620472024
1221483ba4410
13c47ba13c1b
1464abc3c576
15361bc61a0c
hex1e80fbbb4c

131013000012 has 48 divisors (see below), whose sum is σ = 307506834432. Its totient is φ = 43412940480.

The previous prime is 131013000011. The next prime is 131013000023. The reversal of 131013000012 is 210000310131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (131013000011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155138 + ... + 2215094.

It is an arithmetic number, because the mean of its divisors is an integer number (6406392384).

Almost surely, 2131013000012 is an apocalyptic number.

131013000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131013000012 is an abundant number, since it is smaller than the sum of its proper divisors (176493834420).

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

131013000012 is a wasteful number, since it uses less digits than its factorization.

131013000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61038 (or 61036 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 131013000012 its reverse (210000310131), we get a palindrome (341013310143).

The spelling of 131013000012 in words is "one hundred thirty-one billion, thirteen million, twelve", and thus it is an aban number.

Divisors: 1 2 3 4 6 12 211 422 633 844 863 1266 1726 2532 2589 3452 5178 10356 59957 119914 179871 182093 239828 359742 364186 546279 719484 728372 1092558 2185116 12650927 25301854 37952781 50603708 51742891 75905562 103485782 151811124 155228673 206971564 310457346 620914692 10917750001 21835500002 32753250003 43671000004 65506500006 131013000012