23213020020013 has 4 divisors (see below), whose sum is σ = 23706914063040. Its totient is φ = 22719125976988.

The previous prime is 23213020019957. The next prime is 23213020020049. The reversal of 23213020020013 is 31002002031232.

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-23213020020013 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 (23213020020413) 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, 246947021443 + ... + 246947021536.

It is an arithmetic number, because the mean of its divisors is an integer number (5926728515760).

Almost surely, 2^{23213020020013} is an apocalyptic number.

It is an amenable number.

23213020020013 is a deficient number, since it is larger than the sum of its proper divisors (493894043027).

23213020020013 is an equidigital number, since it uses as much as digits as its factorization.

23213020020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493894043026.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23213020020013 its reverse (31002002031232), we get a palindrome (54215022051245).

The spelling of 23213020020013 in words is "twenty-three trillion, two hundred thirteen billion, twenty million, twenty thousand, thirteen".