231040252 has 12 divisors (see below), whose sum is σ = 407899296. Its totient is φ = 114497600.

The previous prime is 231040223. The next prime is 231040259. The reversal of 231040252 is 252040132.

231040252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231040259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255124 + ... + 256027.

It is an arithmetic number, because the mean of its divisors is an integer number (33991608).

Almost surely, 2^231040252 is an apocalyptic number.

It is an amenable number.

231040252 is a deficient number, since it is larger than the sum of its proper divisors (176859044).

231040252 is a wasteful number, since it uses less digits than its factorization.

231040252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511268 (or 511266 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 231040252 is about 15200.0082894714. The cubic root of 231040252 is about 613.6148808455.

Adding to 231040252 its reverse (252040132), we get a palindrome (483080384).

The spelling of 231040252 in words is "two hundred thirty-one million, forty thousand, two hundred fifty-two".