231043131 has 32 divisors (see below), whose sum is σ = 374250240. Its totient is φ = 139708800.

The previous prime is 231043123. The next prime is 231043147. The reversal of 231043131 is 131340132.

231043131 is a `hidden beast` number, since 231 + 0 + 431 + 3 + 1 = 666.

It is not a de Polignac number, because 231043131 - 2³ = 231043123 is a prime.

It is a super-2 number, since 2×231043131² = 106761856764566322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231043121) 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, 261216 + ... + 262098.

It is an arithmetic number, because the mean of its divisors is an integer number (11695320).

Almost surely, 2^231043131 is an apocalyptic number.

231043131 is a deficient number, since it is larger than the sum of its proper divisors (143207109).

231043131 is a wasteful number, since it uses less digits than its factorization.

231043131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1778 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 231043131 is about 15200.1029930721. The cubic root of 231043131 is about 613.6174295931.

Adding to 231043131 its reverse (131340132), we get a palindrome (362383263).

The spelling of 231043131 in words is "two hundred thirty-one million, forty-three thousand, one hundred thirty-one".