31233013120 has 64 divisors (see below), whose sum is σ = 74936401200. Its totient is φ = 12448032768.

The previous prime is 31233013117. The next prime is 31233013151. The reversal of 31233013120 is 2131033213.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×31233013120² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89191 + ... + 265369.

Almost surely, 2^31233013120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31233013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37468200600).

31233013120 is an abundant number, since it is smaller than the sum of its proper divisors (43703388080).

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

31233013120 is a wasteful number, since it uses less digits than its factorization.

31233013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176475 (or 176463 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31233013120 its reverse (2131033213), we get a palindrome (33364046333).

The spelling of 31233013120 in words is "thirty-one billion, two hundred thirty-three million, thirteen thousand, one hundred twenty".