231357913 has 8 divisors (see below), whose sum is σ = 246132000. Its totient is φ = 216713280.

The previous prime is 231357881. The next prime is 231357937. The reversal of 231357913 is 319753132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231357913 - 2⁵ = 231357881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231357953) by changing a digit.

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, 28663 + ... + 35836.

It is an arithmetic number, because the mean of its divisors is an integer number (30766500).

Almost surely, 2^231357913 is an apocalyptic number.

It is an amenable number.

231357913 is a deficient number, since it is larger than the sum of its proper divisors (14774087).

231357913 is a wasteful number, since it uses less digits than its factorization.

231357913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64727.

The product of its digits is 17010, while the sum is 34.

The square root of 231357913 is about 15210.4540694879. The cubic root of 231357913 is about 613.8959750842.

The spelling of 231357913 in words is "two hundred thirty-one million, three hundred fifty-seven thousand, nine hundred thirteen".