23331331213 has 4 divisors (see below), whose sum is σ = 23350409568. Its totient is φ = 23312252860.

The previous prime is 23331331207. The next prime is 23331331249. The reversal of 23331331213 is 31213313332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23331331213 - 2¹⁷ = 23331200141 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 (23331331273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9537343 + ... + 9539788.

It is an arithmetic number, because the mean of its divisors is an integer number (5837602392).

Almost surely, 2^23331331213 is an apocalyptic number.

It is an amenable number.

23331331213 is a deficient number, since it is larger than the sum of its proper divisors (19078355).

23331331213 is a wasteful number, since it uses less digits than its factorization.

23331331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078354.

The product of its digits is 2916, while the sum is 25.

Adding to 23331331213 its reverse (31213313332), we get a palindrome (54544644545).

The spelling of 23331331213 in words is "twenty-three billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred thirteen".