31352245231 has 16 divisors (see below), whose sum is σ = 33106526208. Its totient is φ = 29631571200.

The previous prime is 31352245163. The next prime is 31352245237. The reversal of 31352245231 is 13254225313.

It is a cyclic number.

It is not a de Polignac number, because 31352245231 - 2⁹ = 31352244719 is a prime.

It is a super-2 number, since 2×31352245231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31352245193 and 31352245202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31352245237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396626 + ... + 1418896.

It is an arithmetic number, because the mean of its divisors is an integer number (2069157888).

Almost surely, 2^31352245231 is an apocalyptic number.

31352245231 is a deficient number, since it is larger than the sum of its proper divisors (1754280977).

31352245231 is a wasteful number, since it uses less digits than its factorization.

31352245231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23022.

The product of its digits is 21600, while the sum is 31.

The spelling of 31352245231 in words is "thirty-one billion, three hundred fifty-two million, two hundred forty-five thousand, two hundred thirty-one".