231275444 has 12 divisors (see below), whose sum is σ = 407311044. Its totient is φ = 114900864.

The previous prime is 231275431. The next prime is 231275453. The reversal of 231275444 is 444572132.

It can be written as a sum of positive squares in 2 ways, for example, as 108951844 + 122323600 = 10438^2 + 11060^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231275444.

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 3 ways as a sum of consecutive naturals, for example, 183509 + ... + 184764.

It is an arithmetic number, because the mean of its divisors is an integer number (33942587).

Almost surely, 2^231275444 is an apocalyptic number.

It is an amenable number.

231275444 is a deficient number, since it is larger than the sum of its proper divisors (176035600).

231275444 is a wasteful number, since it uses less digits than its factorization.

231275444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368434 (or 368432 counting only the distinct ones).

The product of its digits is 26880, while the sum is 32.

The square root of 231275444 is about 15207.7428963012. The cubic root of 231275444 is about 613.8230240402.

The spelling of 231275444 in words is "two hundred thirty-one million, two hundred seventy-five thousand, four hundred forty-four".