231276312 has 48 divisors (see below), whose sum is σ = 638202240. Its totient is φ = 75636288.

The previous prime is 231276289. The next prime is 231276319. The reversal of 231276312 is 213672132.

231276312 is a `hidden beast` number, since 2 + 3 + 1 + 27 + 631 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231276319) 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, 26488 + ... + 34119.

It is an arithmetic number, because the mean of its divisors is an integer number (13295880).

Almost surely, 2^231276312 is an apocalyptic number.

It is an amenable number.

231276312 is an abundant number, since it is smaller than the sum of its proper divisors (406925928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231276312 is a wasteful number, since it uses less digits than its factorization.

231276312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60672 (or 60665 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 231276312 is about 15207.7714343687. The cubic root of 231276312 is about 613.8237919524.

The spelling of 231276312 in words is "two hundred thirty-one million, two hundred seventy-six thousand, three hundred twelve".