23423631149 has 2 divisors, whose sum is σ = 23423631150. Its totient is φ = 23423631148.

The previous prime is 23423631139. The next prime is 23423631173. The reversal of 23423631149 is 94113632432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18549078025 + 4874553124 = 136195^2 + 69818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23423631149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23423631139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11711815574 + 11711815575.

It is an arithmetic number, because the mean of its divisors is an integer number (11711815575).

Almost surely, 2^23423631149 is an apocalyptic number.

It is an amenable number.

23423631149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23423631149 is an equidigital number, since it uses as much as digits as its factorization.

23423631149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The spelling of 23423631149 in words is "twenty-three billion, four hundred twenty-three million, six hundred thirty-one thousand, one hundred forty-nine".