31032131031 has 12 divisors (see below), whose sum is σ = 48899115720. Its totient is φ = 18807352080.

The previous prime is 31032131017. The next prime is 31032131113. The reversal of 31032131031 is 13013123013.

It is a happy number.

31032131031 is a `hidden beast` number, since 3 + 1 + 0 + 321 + 310 + 31 = 666.

It is not a de Polignac number, because 31032131031 - 2⁶ = 31032130967 is a prime.

It is a super-2 number, since 2×31032131031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31032130995 and 31032131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032135031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156727836 + ... + 156728033.

It is an arithmetic number, because the mean of its divisors is an integer number (4074926310).

Almost surely, 2^31032131031 is an apocalyptic number.

31032131031 is a deficient number, since it is larger than the sum of its proper divisors (17866984689).

31032131031 is a wasteful number, since it uses less digits than its factorization.

31032131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313455886 (or 313455883 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31032131031 its reverse (13013123013), we get a palindrome (44045254044).

The spelling of 31032131031 in words is "thirty-one billion, thirty-two million, one hundred thirty-one thousand, thirty-one".