231253053531 has 32 divisors (see below), whose sum is σ = 315982218240. Its totient is φ = 150394675200.

The previous prime is 231253053529. The next prime is 231253053643. The reversal of 231253053531 is 135350352132.

It is not a de Polignac number, because 231253053531 - 2¹ = 231253053529 is a prime.

It is a super-2 number, since 2×231253053531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231253053492 and 231253053501.

It is not an unprimeable number, because it can be changed into a prime (231253043531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30908311 + ... + 30915791.

It is an arithmetic number, because the mean of its divisors is an integer number (9874444320).

Almost surely, 2^231253053531 is an apocalyptic number.

231253053531 is a deficient number, since it is larger than the sum of its proper divisors (84729164709).

231253053531 is a wasteful number, since it uses less digits than its factorization.

231253053531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067.

The product of its (nonzero) digits is 40500, while the sum is 33.

The spelling of 231253053531 in words is "two hundred thirty-one billion, two hundred fifty-three million, fifty-three thousand, five hundred thirty-one".