31312323122031 has 24 divisors (see below), whose sum is σ = 51690377024000. Its totient is φ = 17892689323536.

The previous prime is 31312323121997. The next prime is 31312323122111. The reversal of 31312323122031 is 13022132321313.

31312323122031 is a `hidden beast` number, since 3 + 1 + 312 + 3 + 2 + 312 + 2 + 0 + 31 = 666.

It is not a de Polignac number, because 31312323122031 - 2²¹ = 31312321024879 is a prime.

It is a super-2 number, since 2×31312323122031² (a number of 28 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 = 31312323121986 and 31312323122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312323120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19714470 + ... + 21243468.

Almost surely, 2^{31312323122031} is an apocalyptic number.

31312323122031 is a deficient number, since it is larger than the sum of its proper divisors (20378053901969).

31312323122031 is a wasteful number, since it uses less digits than its factorization.

31312323122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854075 (or 1854072 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31312323122031 its reverse (13022132321313), we get a palindrome (44334455443344).

The spelling of 31312323122031 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-three million, one hundred twenty-two thousand, thirty-one".