231131274 has 16 divisors (see below), whose sum is σ = 504286560. Its totient is φ = 70039760.

The previous prime is 231131273. The next prime is 231131317. The reversal of 231131274 is 472131132.

It is a happy number.

231131274 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231131273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750929 + ... + 1751060.

It is an arithmetic number, because the mean of its divisors is an integer number (31517910).

Almost surely, 2^231131274 is an apocalyptic number.

231131274 is an abundant number, since it is smaller than the sum of its proper divisors (273155286).

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

231131274 is a wasteful number, since it uses less digits than its factorization.

231131274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502005.

The product of its digits is 1008, while the sum is 24.

The square root of 231131274 is about 15203.0021377358. The cubic root of 231131274 is about 613.6954513956.

The spelling of 231131274 in words is "two hundred thirty-one million, one hundred thirty-one thousand, two hundred seventy-four".