102131031312 has 30 divisors (see below), whose sum is σ = 285825039422. Its totient is φ = 34043677056.

The previous prime is 102131031293. The next prime is 102131031347. The reversal of 102131031312 is 213130131201.

102131031312 is a `hidden beast` number, since 10 + 2 + 1 + 310 + 31 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 96723488016 + 5407543296 = 311004^2 + 73536^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354621493 + ... + 354621780.

Almost surely, 2^102131031312 is an apocalyptic number.

102131031312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102131031312 is an abundant number, since it is smaller than the sum of its proper divisors (183694008110).

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

102131031312 is a wasteful number, since it uses less digits than its factorization.

102131031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709243287 (or 709243278 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 102131031312 its reverse (213130131201), we get a palindrome (315261162513).

The spelling of 102131031312 in words is "one hundred two billion, one hundred thirty-one million, thirty-one thousand, three hundred twelve".