22023431081 has 2 divisors, whose sum is σ = 22023431082. Its totient is φ = 22023431080.

The previous prime is 22023431077. The next prime is 22023431117. The reversal of 22023431081 is 18013432022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14289811600 + 7733619481 = 119540^2 + 87941^2 .

It is a cyclic number.

It is not a de Polignac number, because 22023431081 - 2² = 22023431077 is a prime.

It is a super-2 number, since 2×22023431081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22023431081.

It is not a weakly prime, because it can be changed into another prime (22023431041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011715540 + 11011715541.

It is an arithmetic number, because the mean of its divisors is an integer number (11011715541).

Almost surely, 2^22023431081 is an apocalyptic number.

It is an amenable number.

22023431081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22023431081 is an equidigital number, since it uses as much as digits as its factorization.

22023431081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 22023431081 in words is "twenty-two billion, twenty-three million, four hundred thirty-one thousand, eighty-one".