23220400331 has 2 divisors, whose sum is σ = 23220400332. Its totient is φ = 23220400330.

The previous prime is 23220400279. The next prime is 23220400339. The reversal of 23220400331 is 13300402232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23220400331 - 2¹⁸ = 23220138187 is a prime.

It is a super-2 number, since 2×23220400331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23220400339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610200165 + 11610200166.

It is an arithmetic number, because the mean of its divisors is an integer number (11610200166).

Almost surely, 2^23220400331 is an apocalyptic number.

23220400331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220400331 is an equidigital number, since it uses as much as digits as its factorization.

23220400331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23220400331 its reverse (13300402232), we get a palindrome (36520802563).

The spelling of 23220400331 in words is "twenty-three billion, two hundred twenty million, four hundred thousand, three hundred thirty-one".