23311330309 has 2 divisors, whose sum is σ = 23311330310. Its totient is φ = 23311330308.

The previous prime is 23311330303. The next prime is 23311330373. The reversal of 23311330309 is 90303311332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16571412900 + 6739917409 = 128730^2 + 82097^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311330309 - 2⁷ = 23311330181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23311330303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655665154 + 11655665155.

It is an arithmetic number, because the mean of its divisors is an integer number (11655665155).

Almost surely, 2^23311330309 is an apocalyptic number.

It is an amenable number.

23311330309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311330309 is an equidigital number, since it uses as much as digits as its factorization.

23311330309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 28.

The spelling of 23311330309 in words is "twenty-three billion, three hundred eleven million, three hundred thirty thousand, three hundred nine".