102131031231 has 24 divisors (see below), whose sum is σ = 148479851520. Its totient is φ = 67646437200.

The previous prime is 102131031179. The next prime is 102131031241. The reversal of 102131031231 is 132130131201.

102131031231 is a `hidden beast` number, since 10 + 2 + 1 + 310 + 312 + 31 = 666.

It is not a de Polignac number, because 102131031231 - 2⁷ = 102131031103 is a prime.

It is a super-2 number, since 2×102131031231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131031241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1357480 + ... + 1430738.

It is an arithmetic number, because the mean of its divisors is an integer number (6186660480).

Almost surely, 2^102131031231 is an apocalyptic number.

102131031231 is a deficient number, since it is larger than the sum of its proper divisors (46348820289).

102131031231 is a wasteful number, since it uses less digits than its factorization.

102131031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74267 (or 74264 counting only the distinct ones).

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

Adding to 102131031231 its reverse (132130131201), we get a palindrome (234261162432).

The spelling of 102131031231 in words is "one hundred two billion, one hundred thirty-one million, thirty-one thousand, two hundred thirty-one".