31113124120 has 64 divisors (see below), whose sum is σ = 75425605920. Its totient is φ = 11482420224.

The previous prime is 31113124117. The next prime is 31113124153. The reversal of 31113124120 is 2142131113.

It is a congruent number.

It is an unprimeable number.

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, 1165644 + ... + 1192036.

Almost surely, 2^31113124120 is an apocalyptic number.

It is an amenable number.

31113124120 is an abundant number, since it is smaller than the sum of its proper divisors (44312481800).

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

31113124120 is a wasteful number, since it uses less digits than its factorization.

31113124120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28684 (or 28680 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31113124120 its reverse (2142131113), we get a palindrome (33255255233).

The spelling of 31113124120 in words is "thirty-one billion, one hundred thirteen million, one hundred twenty-four thousand, one hundred twenty".