23131311110213 has 4 divisors (see below), whose sum is σ = 23134896810528. Its totient is φ = 23127725409900.

The previous prime is 23131311110161. The next prime is 23131311110231. The reversal of 23131311110213 is 31201111313132.

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 a de Polignac number, because none of the positive numbers 2^k-23131311110213 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 (23131311110233) 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, 1792840481 + ... + 1792853382.

It is an arithmetic number, because the mean of its divisors is an integer number (5783724202632).

Almost surely, 2^{23131311110213} is an apocalyptic number.

It is an amenable number.

23131311110213 is a deficient number, since it is larger than the sum of its proper divisors (3585700315).

23131311110213 is an equidigital number, since it uses as much as digits as its factorization.

23131311110213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585700314.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 23131311110213 its reverse (31201111313132), we get a palindrome (54332422423345).

The spelling of 23131311110213 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred eleven million, one hundred ten thousand, two hundred thirteen".