23943897331 has 2 divisors, whose sum is σ = 23943897332. Its totient is φ = 23943897330.

The previous prime is 23943897323. The next prime is 23943897359. The reversal of 23943897331 is 13379834932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23943897331 - 2³ = 23943897323 is a prime.

It is a super-2 number, since 2×23943897331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23943895331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11971948665 + 11971948666.

It is an arithmetic number, because the mean of its divisors is an integer number (11971948666).

Almost surely, 2^23943897331 is an apocalyptic number.

23943897331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23943897331 is an equidigital number, since it uses as much as digits as its factorization.

23943897331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 52.

The spelling of 23943897331 in words is "twenty-three billion, nine hundred forty-three million, eight hundred ninety-seven thousand, three hundred thirty-one".