23220310031 has 4 divisors (see below), whose sum is σ = 24229888752. Its totient is φ = 22210731312.

The previous prime is 23220310007. The next prime is 23220310033. The reversal of 23220310031 is 13001302232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23220310031 is a prime.

It is a super-2 number, since 2×23220310031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23220309991 and 23220310009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220310033) 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, 504789326 + ... + 504789371.

It is an arithmetic number, because the mean of its divisors is an integer number (6057472188).

Almost surely, 2^23220310031 is an apocalyptic number.

23220310031 is a deficient number, since it is larger than the sum of its proper divisors (1009578721).

23220310031 is a wasteful number, since it uses less digits than its factorization.

23220310031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009578720.

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

Adding to 23220310031 its reverse (13001302232), we get a palindrome (36221612263).

The spelling of 23220310031 in words is "twenty-three billion, two hundred twenty million, three hundred ten thousand, thirty-one".