23031220211013 has 16 divisors (see below), whose sum is σ = 35099762039936. Its totient is φ = 13158983761920.

The previous prime is 23031220210949. The next prime is 23031220211023. The reversal of 23031220211013 is 31011202213032.

It is not a de Polignac number, because 23031220211013 - 2⁶ = 23031220210949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031220211023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71230756 + ... + 71553357.

It is an arithmetic number, because the mean of its divisors is an integer number (2193735127496).

Almost surely, 2^{23031220211013} is an apocalyptic number.

It is an amenable number.

23031220211013 is a deficient number, since it is larger than the sum of its proper divisors (12068541828923).

23031220211013 is a wasteful number, since it uses less digits than its factorization.

23031220211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142791804.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23031220211013 its reverse (31011202213032), we get a palindrome (54042422424045).

The spelling of 23031220211013 in words is "twenty-three trillion, thirty-one billion, two hundred twenty million, two hundred eleven thousand, thirteen".