23131320089 has 2 divisors, whose sum is σ = 23131320090. Its totient is φ = 23131320088.

The previous prime is 23131320077. The next prime is 23131320137. The reversal of 23131320089 is 98002313132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20048294464 + 3083025625 = 141592^2 + 55525^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131320089 - 2⁴ = 23131320073 is a prime.

It is not a weakly prime, because it can be changed into another prime (23131320019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565660044 + 11565660045.

It is an arithmetic number, because the mean of its divisors is an integer number (11565660045).

Almost surely, 2^23131320089 is an apocalyptic number.

It is an amenable number.

23131320089 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131320089 is an equidigital number, since it uses as much as digits as its factorization.

23131320089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 23131320089 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty thousand, eighty-nine".