231380131 has 2 divisors, whose sum is σ = 231380132. Its totient is φ = 231380130.

The previous prime is 231380111. The next prime is 231380213. The reversal of 231380131 is 131083132.

231380131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231380131 - 2¹³ = 231371939 is a prime.

It is a super-2 number, since 2×231380131² = 107073530043154322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231380111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115690065 + 115690066.

It is an arithmetic number, because the mean of its divisors is an integer number (115690066).

Almost surely, 2^231380131 is an apocalyptic number.

231380131 is a deficient number, since it is larger than the sum of its proper divisors (1).

231380131 is an equidigital number, since it uses as much as digits as its factorization.

231380131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 231380131 is about 15211.1844049042. The cubic root of 231380131 is about 613.9156258841.

The spelling of 231380131 in words is "two hundred thirty-one million, three hundred eighty thousand, one hundred thirty-one".