23310401021 has 2 divisors, whose sum is σ = 23310401022. Its totient is φ = 23310401020.

The previous prime is 23310401017. The next prime is 23310401027. The reversal of 23310401021 is 12010401332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19736035225 + 3574365796 = 140485^2 + 59786^2 .

It is a cyclic number.

It is not a de Polignac number, because 23310401021 - 2² = 23310401017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23310401027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655200510 + 11655200511.

It is an arithmetic number, because the mean of its divisors is an integer number (11655200511).

Almost surely, 2^23310401021 is an apocalyptic number.

It is an amenable number.

23310401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23310401021 is an equidigital number, since it uses as much as digits as its factorization.

23310401021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23310401021 its reverse (12010401332), we get a palindrome (35320802353).

The spelling of 23310401021 in words is "twenty-three billion, three hundred ten million, four hundred one thousand, twenty-one".