23220213131 has 2 divisors, whose sum is σ = 23220213132. Its totient is φ = 23220213130.

The previous prime is 23220213097. The next prime is 23220213143. The reversal of 23220213131 is 13131202232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23220213131 - 2⁶ = 23220213067 is a prime.

It is a super-2 number, since 2×23220213131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23220213161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610106565 + 11610106566.

It is an arithmetic number, because the mean of its divisors is an integer number (11610106566).

Almost surely, 2^23220213131 is an apocalyptic number.

23220213131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220213131 is an equidigital number, since it uses as much as digits as its factorization.

23220213131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23220213131 its reverse (13131202232), we get a palindrome (36351415363).

The spelling of 23220213131 in words is "twenty-three billion, two hundred twenty million, two hundred thirteen thousand, one hundred thirty-one".