31233013123120 has 20 divisors (see below), whose sum is σ = 72616755511440. Its totient is φ = 12493205249216.

The previous prime is 31233013123099. The next prime is 31233013123133. The reversal of 31233013123120 is 2132131033213.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×31233013123120² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195206331940 + ... + 195206332099.

It is an arithmetic number, because the mean of its divisors is an integer number (3630837775572).

Almost surely, 2^{31233013123120} is an apocalyptic number.

It is an amenable number.

31233013123120 is an abundant number, since it is smaller than the sum of its proper divisors (41383742388320).

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

31233013123120 is a wasteful number, since it uses less digits than its factorization.

31233013123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390412664052 (or 390412664046 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31233013123120 its reverse (2132131033213), we get a palindrome (33365144156333).

The spelling of 31233013123120 in words is "thirty-one trillion, two hundred thirty-three billion, thirteen million, one hundred twenty-three thousand, one hundred twenty".