231313023213 has 8 divisors (see below), whose sum is σ = 309800402688. Its totient is φ = 153517162944.

The previous prime is 231313023211. The next prime is 231313023281. The reversal of 231313023213 is 312320313132.

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

It is not a de Polignac number, because 231313023213 - 2¹ = 231313023211 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313023211) 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, 172879020 + ... + 172880357.

It is an arithmetic number, because the mean of its divisors is an integer number (38725050336).

Almost surely, 2^231313023213 is an apocalyptic number.

It is an amenable number.

231313023213 is a deficient number, since it is larger than the sum of its proper divisors (78487379475).

231313023213 is a wasteful number, since it uses less digits than its factorization.

231313023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345759603.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231313023213 its reverse (312320313132), we get a palindrome (543633336345).

The spelling of 231313023213 in words is "two hundred thirty-one billion, three hundred thirteen million, twenty-three thousand, two hundred thirteen".