231431255 has 24 divisors (see below), whose sum is σ = 310313472. Its totient is φ = 165528000.

The previous prime is 231431237. The next prime is 231431279. The reversal of 231431255 is 552134132.

It is a happy number.

It is not a de Polignac number, because 231431255 - 2¹⁴ = 231414871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 33770 + ... + 40040.

It is an arithmetic number, because the mean of its divisors is an integer number (12929728).

Almost surely, 2^231431255 is an apocalyptic number.

231431255 is a deficient number, since it is larger than the sum of its proper divisors (78882217).

231431255 is a wasteful number, since it uses less digits than its factorization.

231431255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359 (or 6348 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 231431255 is about 15212.8647860947. The cubic root of 231431255 is about 613.9608379355.

Adding to 231431255 its reverse (552134132), we get a palindrome (783565387).

The spelling of 231431255 in words is "two hundred thirty-one million, four hundred thirty-one thousand, two hundred fifty-five".