231997244 has 6 divisors (see below), whose sum is σ = 405995184. Its totient is φ = 115998620.

The previous prime is 231997237. The next prime is 231997291. The reversal of 231997244 is 442799132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28999652 + ... + 28999659.

It is an arithmetic number, because the mean of its divisors is an integer number (67665864).

Almost surely, 2^231997244 is an apocalyptic number.

It is an amenable number.

231997244 is a deficient number, since it is larger than the sum of its proper divisors (173997940).

231997244 is a wasteful number, since it uses less digits than its factorization.

231997244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57999315 (or 57999313 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 231997244 is about 15231.4557413269. The cubic root of 231997244 is about 614.4609319939.

The spelling of 231997244 in words is "two hundred thirty-one million, nine hundred ninety-seven thousand, two hundred forty-four".