231388495 has 16 divisors (see below), whose sum is σ = 308673792. Its totient is φ = 165358080.

The previous prime is 231388489. The next prime is 231388499. The reversal of 231388495 is 594883132.

It is not a de Polignac number, because 231388495 - 2²⁷ = 97170767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231388499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55402 + ... + 59431.

It is an arithmetic number, because the mean of its divisors is an integer number (19292112).

Almost surely, 2^231388495 is an apocalyptic number.

231388495 is a deficient number, since it is larger than the sum of its proper divisors (77285297).

231388495 is a wasteful number, since it uses less digits than its factorization.

231388495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114882.

The product of its digits is 207360, while the sum is 43.

The square root of 231388495 is about 15211.4593317012. The cubic root of 231388495 is about 613.9230231318.

The spelling of 231388495 in words is "two hundred thirty-one million, three hundred eighty-eight thousand, four hundred ninety-five".