23309115961 has 2 divisors, whose sum is σ = 23309115962. Its totient is φ = 23309115960.

The previous prime is 23309115953. The next prime is 23309115997. The reversal of 23309115961 is 16951190332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19555225600 + 3753890361 = 139840^2 + 61269^2 .

It is a cyclic number.

It is not a de Polignac number, because 23309115961 - 2³ = 23309115953 is a prime.

It is not a weakly prime, because it can be changed into another prime (23309115901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11654557980 + 11654557981.

It is an arithmetic number, because the mean of its divisors is an integer number (11654557981).

Almost surely, 2^23309115961 is an apocalyptic number.

It is an amenable number.

23309115961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23309115961 is an equidigital number, since it uses as much as digits as its factorization.

23309115961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The spelling of 23309115961 in words is "twenty-three billion, three hundred nine million, one hundred fifteen thousand, nine hundred sixty-one".