31103321133 has 16 divisors (see below), whose sum is σ = 41545855296. Its totient is φ = 20698204800.

The previous prime is 31103321089. The next prime is 31103321143. The reversal of 31103321133 is 33112330113.

It is not a de Polignac number, because 31103321133 - 2¹⁷ = 31103190061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103321143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4493191 + ... + 4500107.

It is an arithmetic number, because the mean of its divisors is an integer number (2596615956).

Almost surely, 2^31103321133 is an apocalyptic number.

It is an amenable number.

31103321133 is a deficient number, since it is larger than the sum of its proper divisors (10442534163).

31103321133 is a wasteful number, since it uses less digits than its factorization.

31103321133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9404.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31103321133 its reverse (33112330113), we get a palindrome (64215651246).

The spelling of 31103321133 in words is "thirty-one billion, one hundred three million, three hundred twenty-one thousand, one hundred thirty-three".