2131366872 has 16 divisors (see below), whose sum is σ = 5328417240. Its totient is φ = 710455616.

The previous prime is 2131366859. The next prime is 2131366873. The reversal of 2131366872 is 2786631312.

It is a super-5 number, since 5×2131366872⁵ (a number of 48 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2131366872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131366873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44403453 + ... + 44403500.

Almost surely, 2^2131366872 is an apocalyptic number.

It is an amenable number.

2131366872 is an abundant number, since it is smaller than the sum of its proper divisors (3197050368).

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

2131366872 is a wasteful number, since it uses less digits than its factorization.

2131366872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88806962 (or 88806958 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 2131366872 is about 46166.7290589229. The cubic root of 2131366872 is about 1286.9235167234.

The spelling of 2131366872 in words is "two billion, one hundred thirty-one million, three hundred sixty-six thousand, eight hundred seventy-two".