231310131 has 12 divisors (see below), whose sum is σ = 333963288. Its totient is φ = 142344384.

The previous prime is 231310117. The next prime is 231310159. The reversal of 231310131 is 131013132.

231310131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231310131 - 2⁹ = 231309619 is a prime.

It is a super-2 number, since 2×231310131² = 107008753406474322, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 231310131.

It is not an unprimeable number, because it can be changed into a prime (231310831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227610 + ... + 228623.

It is an arithmetic number, because the mean of its divisors is an integer number (27830274).

Almost surely, 2^231310131 is an apocalyptic number.

231310131 is a deficient number, since it is larger than the sum of its proper divisors (102653157).

231310131 is a wasteful number, since it uses less digits than its factorization.

231310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456262 (or 456249 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231310131 is about 15208.8832923394. The cubic root of 231310131 is about 613.8537098385.

Adding to 231310131 its reverse (131013132), we get a palindrome (362323263).

It can be divided in two parts, 2313101 and 31, that added together give a palindrome (2313132).

The spelling of 231310131 in words is "two hundred thirty-one million, three hundred ten thousand, one hundred thirty-one".