231255231 has 8 divisors (see below), whose sum is σ = 309393840. Its totient is φ = 153643392.

The previous prime is 231255229. The next prime is 231255259. The reversal of 231255231 is 132552132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231255231 - 2¹ = 231255229 is a prime.

It is a super-2 number, since 2×231255231² = 106957963729726722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231255221) 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 7 ways as a sum of consecutive naturals, for example, 130666 + ... + 132423.

It is an arithmetic number, because the mean of its divisors is an integer number (38674230).

Almost surely, 2^231255231 is an apocalyptic number.

231255231 is a deficient number, since it is larger than the sum of its proper divisors (78138609).

231255231 is a wasteful number, since it uses less digits than its factorization.

231255231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263385.

The product of its digits is 1800, while the sum is 24.

The square root of 231255231 is about 15207.0783189934. The cubic root of 231255231 is about 613.8051412276.

The spelling of 231255231 in words is "two hundred thirty-one million, two hundred fifty-five thousand, two hundred thirty-one".