231116252 has 24 divisors (see below), whose sum is σ = 413045136. Its totient is φ = 113113728.

The previous prime is 231116231. The next prime is 231116257. The reversal of 231116252 is 252611132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231116257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114968 + ... + 116960.

It is an arithmetic number, because the mean of its divisors is an integer number (17210214).

Almost surely, 2^231116252 is an apocalyptic number.

It is an amenable number.

231116252 is a deficient number, since it is larger than the sum of its proper divisors (181928884).

231116252 is a wasteful number, since it uses less digits than its factorization.

231116252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2595 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 231116252 is about 15202.5080825501. The cubic root of 231116252 is about 613.6821557294.

Adding to 231116252 its reverse (252611132), we get a palindrome (483727384).

The spelling of 231116252 in words is "two hundred thirty-one million, one hundred sixteen thousand, two hundred fifty-two".