31023012001331 has 16 divisors (see below), whose sum is σ = 35496226913280. Its totient is φ = 26560140122880.

The previous prime is 31023012001279. The next prime is 31023012001337. The reversal of 31023012001331 is 13310021032013.

It is a de Polignac number, because none of the positive numbers 2^k-31023012001331 is a prime.

It is a super-2 number, since 2×31023012001331² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31023012001337) 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, 97147235 + ... + 97466051.

It is an arithmetic number, because the mean of its divisors is an integer number (2218514182080).

Almost surely, 2^{31023012001331} is an apocalyptic number.

31023012001331 is a deficient number, since it is larger than the sum of its proper divisors (4473214911949).

31023012001331 is a wasteful number, since it uses less digits than its factorization.

31023012001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334994.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31023012001331 its reverse (13310021032013), we get a palindrome (44333033033344).

The spelling of 31023012001331 in words is "thirty-one trillion, twenty-three billion, twelve million, one thousand, three hundred thirty-one".