31312022212313 has 16 divisors (see below), whose sum is σ = 31610326809600. Its totient is φ = 31014670876800.

The previous prime is 31312022212309. The next prime is 31312022212391. The reversal of 31312022212313 is 31321222021313.

It is not a de Polignac number, because 31312022212313 - 2² = 31312022212309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312322212313) 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, 149269643 + ... + 149479263.

It is an arithmetic number, because the mean of its divisors is an integer number (1975645425600).

Almost surely, 2^{31312022212313} is an apocalyptic number.

It is an amenable number.

31312022212313 is a deficient number, since it is larger than the sum of its proper divisors (298304597287).

31312022212313 is a wasteful number, since it uses less digits than its factorization.

31312022212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211888.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31312022212313 its reverse (31321222021313), we get a palindrome (62633244233626).

The spelling of 31312022212313 in words is "thirty-one trillion, three hundred twelve billion, twenty-two million, two hundred twelve thousand, three hundred thirteen".