231297509213 has 8 divisors (see below), whose sum is σ = 231606188928. Its totient is φ = 230988898224.

The previous prime is 231297509203. The next prime is 231297509407. The reversal of 231297509213 is 312905792132.

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

It is a cyclic number.

It is not a de Polignac number, because 231297509213 - 2²⁸ = 231029073757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231297509203) 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, 13433456 + ... + 13450662.

It is an arithmetic number, because the mean of its divisors is an integer number (28950773616).

Almost surely, 2^231297509213 is an apocalyptic number.

It is an amenable number.

231297509213 is a deficient number, since it is larger than the sum of its proper divisors (308679715).

231297509213 is a wasteful number, since it uses less digits than its factorization.

231297509213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34363.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 231297509213 in words is "two hundred thirty-one billion, two hundred ninety-seven million, five hundred nine thousand, two hundred thirteen".