23261287097 has 2 divisors, whose sum is σ = 23261287098. Its totient is φ = 23261287096.

The previous prime is 23261287067. The next prime is 23261287123. The reversal of 23261287097 is 79078216232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16060746361 + 7200540736 = 126731^2 + 84856^2 .

It is a cyclic number.

It is not a de Polignac number, because 23261287097 - 2²⁶ = 23194178233 is a prime.

It is not a weakly prime, because it can be changed into another prime (23261287057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11630643548 + 11630643549.

It is an arithmetic number, because the mean of its divisors is an integer number (11630643549).

Almost surely, 2^23261287097 is an apocalyptic number.

It is an amenable number.

23261287097 is a deficient number, since it is larger than the sum of its proper divisors (1).

23261287097 is an equidigital number, since it uses as much as digits as its factorization.

23261287097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 23261287097 in words is "twenty-three billion, two hundred sixty-one million, two hundred eighty-seven thousand, ninety-seven".