231513230 has 32 divisors (see below), whose sum is σ = 451332000. Its totient is φ = 84995712.

The previous prime is 231513221. The next prime is 231513283. The reversal of 231513230 is 32315132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18296 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (14104125).

Almost surely, 2^231513230 is an apocalyptic number.

231513230 is a deficient number, since it is larger than the sum of its proper divisors (219818770).

231513230 is a wasteful number, since it uses less digits than its factorization.

231513230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231513230 is about 15215.5588132674. The cubic root of 231513230 is about 614.0333195003.

Adding to 231513230 its reverse (32315132), we get a palindrome (263828362).

The spelling of 231513230 in words is "two hundred thirty-one million, five hundred thirteen thousand, two hundred thirty".