31321132124 has 12 divisors (see below), whose sum is σ = 55314844200. Its totient is φ = 15516890928.

The previous prime is 31321132123. The next prime is 31321132153. The reversal of 31321132124 is 42123112313.

It is a self number, because there is not a number n which added to its sum of digits gives 31321132124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321132123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35918294 + ... + 35919165.

It is an arithmetic number, because the mean of its divisors is an integer number (4609570350).

Almost surely, 2^31321132124 is an apocalyptic number.

It is an amenable number.

31321132124 is a deficient number, since it is larger than the sum of its proper divisors (23993712076).

31321132124 is a wasteful number, since it uses less digits than its factorization.

31321132124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71837572 (or 71837570 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 31321132124 its reverse (42123112313), we get a palindrome (73444244437).

The spelling of 31321132124 in words is "thirty-one billion, three hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-four".