231135250 has 32 divisors (see below), whose sum is σ = 433869696. Its totient is φ = 92201200.

The previous prime is 231135239. The next prime is 231135253. The reversal of 231135250 is 52531132.

It is not an unprimeable number, because it can be changed into a prime (231135253) 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 15 ways as a sum of consecutive naturals, for example, 109707 + ... + 111793.

It is an arithmetic number, because the mean of its divisors is an integer number (13558428).

Almost surely, 2^231135250 is an apocalyptic number.

231135250 is a deficient number, since it is larger than the sum of its proper divisors (202734446).

231135250 is a wasteful number, since it uses less digits than its factorization.

231135250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 231135250 is about 15203.1329008201. The cubic root of 231135250 is about 613.6989703758.

Adding to 231135250 its reverse (52531132), we get a palindrome (283666382).

The spelling of 231135250 in words is "two hundred thirty-one million, one hundred thirty-five thousand, two hundred fifty".