231399250 has 16 divisors (see below), whose sum is σ = 433179864. Its totient is φ = 92559600.

The previous prime is 231399247. The next prime is 231399263. The reversal of 231399250 is 52993132.

231399250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 93876721 + 137522529 = 9689^2 + 11727^2 .

It is a super-2 number, since 2×231399250² = 107091225801125000, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 462549 + ... + 463048.

Almost surely, 2^231399250 is an apocalyptic number.

231399250 is a deficient number, since it is larger than the sum of its proper divisors (201780614).

231399250 is an equidigital number, since it uses as much as digits as its factorization.

231399250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925614 (or 925604 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 231399250 is about 15211.8128439710. The cubic root of 231399250 is about 613.9325347540.

The spelling of 231399250 in words is "two hundred thirty-one million, three hundred ninety-nine thousand, two hundred fifty".