231123047887281 has 16 divisors (see below), whose sum is σ = 337457225825280. Its totient is φ = 139541971527120.

The previous prime is 231123047887273. The next prime is 231123047887331. The reversal of 231123047887281 is 182788740321132.

It is not a de Polignac number, because 231123047887281 - 2³ = 231123047887273 is a prime.

It is a super-2 number, since 2×231123047887281² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231123047887231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13315064941 + ... + 13315082298.

It is an arithmetic number, because the mean of its divisors is an integer number (21091076614080).

Almost surely, 2^{231123047887281} is an apocalyptic number.

It is an amenable number.

231123047887281 is a deficient number, since it is larger than the sum of its proper divisors (106334177937999).

231123047887281 is a wasteful number, since it uses less digits than its factorization.

231123047887281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630147516.

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 231123047887281 in words is "two hundred thirty-one trillion, one hundred twenty-three billion, forty-seven million, eight hundred eighty-seven thousand, two hundred eighty-one".