2531123512164 has 144 divisors (see below), whose sum is σ = 7448953046080. Its totient is φ = 717876276480.

The previous prime is 2531123512163. The next prime is 2531123512207. The reversal of 2531123512164 is 4612153211352.

2531123512164 is a `hidden beast` number, since 2 + 5 + 3 + 1 + 123 + 512 + 16 + 4 = 666.

2531123512164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2531123512163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3517642 + ... + 4175649.

Almost surely, 2^{2531123512164} is an apocalyptic number.

It is an amenable number.

2531123512164 is an abundant number, since it is smaller than the sum of its proper divisors (4917829533916).

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

2531123512164 is a wasteful number, since it uses less digits than its factorization.

2531123512164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693370 (or 7693365 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 2531123512164 in words is "two trillion, five hundred thirty-one billion, one hundred twenty-three million, five hundred twelve thousand, one hundred sixty-four".