23220031013 has 4 divisors (see below), whose sum is σ = 23341602048. Its totient is φ = 23098459980.

The previous prime is 23220030991. The next prime is 23220031019. The reversal of 23220031013 is 31013002232.

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-23220031013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23220030982 and 23220031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220031019) 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, 60785231 + ... + 60785612.

It is an arithmetic number, because the mean of its divisors is an integer number (5835400512).

Almost surely, 2^23220031013 is an apocalyptic number.

It is an amenable number.

23220031013 is a deficient number, since it is larger than the sum of its proper divisors (121571035).

23220031013 is a wasteful number, since it uses less digits than its factorization.

23220031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121571034.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23220031013 its reverse (31013002232), we get a palindrome (54233033245).

The spelling of 23220031013 in words is "twenty-three billion, two hundred twenty million, thirty-one thousand, thirteen".