2131567574531 has 4 divisors (see below), whose sum is σ = 2131572291864. Its totient is φ = 2131562857200.

The previous prime is 2131567574527. The next prime is 2131567574557. The reversal of 2131567574531 is 1354757651312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131567574531 - 2² = 2131567574527 is a prime.

It is a super-2 number, since 2×2131567574531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131567574531.

It is not an unprimeable number, because it can be changed into a prime (2131567574561) 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, 1599410 + ... + 2611751.

It is an arithmetic number, because the mean of its divisors is an integer number (532893072966).

Almost surely, 2^{2131567574531} is an apocalyptic number.

2131567574531 is a deficient number, since it is larger than the sum of its proper divisors (4717333).

2131567574531 is an equidigital number, since it uses as much as digits as its factorization.

2131567574531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717332.

The product of its digits is 2646000, while the sum is 50.

The spelling of 2131567574531 in words is "two trillion, one hundred thirty-one billion, five hundred sixty-seven million, five hundred seventy-four thousand, five hundred thirty-one".