31310131120 has 40 divisors (see below), whose sum is σ = 74763522864. Its totient is φ = 12185563392.

The previous prime is 31310131079. The next prime is 31310131133. The reversal of 31310131120 is 2113101313.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 31310131094 and 31310131103.

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 7 ways as a sum of consecutive naturals, for example, 5285914 + ... + 5291833.

Almost surely, 2^31310131120 is an apocalyptic number.

It is an amenable number.

31310131120 is an abundant number, since it is smaller than the sum of its proper divisors (43453391744).

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

31310131120 is a wasteful number, since it uses less digits than its factorization.

31310131120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577797 (or 10577791 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31310131120 its reverse (2113101313), we get a palindrome (33423232433).

The spelling of 31310131120 in words is "thirty-one billion, three hundred ten million, one hundred thirty-one thousand, one hundred twenty".