23491842287 has 2 divisors, whose sum is σ = 23491842288. Its totient is φ = 23491842286.

The previous prime is 23491842263. The next prime is 23491842289. The reversal of 23491842287 is 78224819432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23491842287 - 2³⁴ = 6311973103 is a prime.

Together with 23491842289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23491842289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745921143 + 11745921144.

It is an arithmetic number, because the mean of its divisors is an integer number (11745921144).

Almost surely, 2^23491842287 is an apocalyptic number.

23491842287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23491842287 is an equidigital number, since it uses as much as digits as its factorization.

23491842287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 50.

The spelling of 23491842287 in words is "twenty-three billion, four hundred ninety-one million, eight hundred forty-two thousand, two hundred eighty-seven".