131031210231 has 6 divisors (see below), whose sum is σ = 189267303680. Its totient is φ = 87354140148.

The previous prime is 131031210133. The next prime is 131031210241. The reversal of 131031210231 is 132012130131.

131031210231 is a `hidden beast` number, since 1 + 310 + 3 + 121 + 0 + 231 = 666.

It is not a de Polignac number, because 131031210231 - 2¹⁰ = 131031209207 is a prime.

It is a super-2 number, since 2×131031210231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031210241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7279511671 + ... + 7279511688.

Almost surely, 2^131031210231 is an apocalyptic number.

131031210231 is a deficient number, since it is larger than the sum of its proper divisors (58236093449).

131031210231 is a wasteful number, since it uses less digits than its factorization.

131031210231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14559023365 (or 14559023362 counting only the distinct ones).

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

Adding to 131031210231 its reverse (132012130131), we get a palindrome (263043340362).

The spelling of 131031210231 in words is "one hundred thirty-one billion, thirty-one million, two hundred ten thousand, two hundred thirty-one".