31103122400 has 108 divisors (see below), whose sum is σ = 88327424808. Its totient is φ = 10663914240.

The previous prime is 31103122397. The next prime is 31103122411. The reversal of 31103122400 is 422130113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 357524 + ... + 435923.

It is an arithmetic number, because the mean of its divisors is an integer number (817846526).

Almost surely, 2^31103122400 is an apocalyptic number.

It is an amenable number.

31103122400 is an abundant number, since it is smaller than the sum of its proper divisors (57224302408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31103122400 is a wasteful number, since it uses less digits than its factorization.

31103122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793481 (or 793461 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31103122400 its reverse (422130113), we get a palindrome (31525252513).

The spelling of 31103122400 in words is "thirty-one billion, one hundred three million, one hundred twenty-two thousand, four hundred".