31311132031323 has 24 divisors (see below), whose sum is σ = 45251906462256. Its totient is φ = 20862681796800.

The previous prime is 31311132031279. The next prime is 31311132031327. The reversal of 31311132031323 is 32313023111313.

31311132031323 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 1 + 1 + 320 + 313 + 23 = 666.

It is not a de Polignac number, because 31311132031323 - 2²² = 31311127837019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31311132031327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607756761 + ... + 607808277.

It is an arithmetic number, because the mean of its divisors is an integer number (1885496102594).

Almost surely, 2^{31311132031323} is an apocalyptic number.

31311132031323 is a deficient number, since it is larger than the sum of its proper divisors (13940774430933).

31311132031323 is a wasteful number, since it uses less digits than its factorization.

31311132031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87115 (or 87112 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 31311132031323 its reverse (32313023111313), we get a palindrome (63624155142636).

The spelling of 31311132031323 in words is "thirty-one trillion, three hundred eleven billion, one hundred thirty-two million, thirty-one thousand, three hundred twenty-three".