31213022010331 has 16 divisors (see below), whose sum is σ = 35953698390016. Its totient is φ = 26542773212256.

The previous prime is 31213022010311. The next prime is 31213022010383. The reversal of 31213022010331 is 13301022031213.

It is not a de Polignac number, because 31213022010331 - 2³⁵ = 31178662271963 is a prime.

It is a super-2 number, since 2×31213022010331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213022010311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42742885 + ... + 43467001.

It is an arithmetic number, because the mean of its divisors is an integer number (2247106149376).

Almost surely, 2^{31213022010331} is an apocalyptic number.

31213022010331 is a deficient number, since it is larger than the sum of its proper divisors (4740676379685).

31213022010331 is a wasteful number, since it uses less digits than its factorization.

31213022010331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772738.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31213022010331 its reverse (13301022031213), we get a palindrome (44514044041544).

The spelling of 31213022010331 in words is "thirty-one trillion, two hundred thirteen billion, twenty-two million, ten thousand, three hundred thirty-one".