231013131213 has 8 divisors (see below), whose sum is σ = 308050095808. Its totient is φ = 153992460384.

The previous prime is 231013131199. The next prime is 231013131233. The reversal of 231013131213 is 312131310132.

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 231013131213 - 2⁹ = 231013130701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231013131213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231013131233) 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, 4040320 + ... + 4097097.

It is an arithmetic number, because the mean of its divisors is an integer number (38506261976).

Almost surely, 2^231013131213 is an apocalyptic number.

It is an amenable number.

231013131213 is a deficient number, since it is larger than the sum of its proper divisors (77036964595).

231013131213 is an equidigital number, since it uses as much as digits as its factorization.

231013131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146883.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231013131213 its reverse (312131310132), we get a palindrome (543144441345).

The spelling of 231013131213 in words is "two hundred thirty-one billion, thirteen million, one hundred thirty-one thousand, two hundred thirteen".