23311320402281 has 2 divisors, whose sum is σ = 23311320402282. Its totient is φ = 23311320402280.

The previous prime is 23311320402277. The next prime is 23311320402301. The reversal of 23311320402281 is 18220402311332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12308274139225 + 11003046263056 = 3508315^2 + 3317084^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311320402281 - 2² = 23311320402277 is a prime.

It is a super-2 number, since 2×23311320402281² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23311320402481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655660201140 + 11655660201141.

It is an arithmetic number, because the mean of its divisors is an integer number (11655660201141).

Almost surely, 2^{23311320402281} is an apocalyptic number.

It is an amenable number.

23311320402281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311320402281 is an equidigital number, since it uses as much as digits as its factorization.

23311320402281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 23311320402281 in words is "twenty-three trillion, three hundred eleven billion, three hundred twenty million, four hundred two thousand, two hundred eighty-one".