23657031487 has 2 divisors, whose sum is σ = 23657031488. Its totient is φ = 23657031486.

The previous prime is 23657031481. The next prime is 23657031509. The reversal of 23657031487 is 78413075632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23657031487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23657031481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11828515743 + 11828515744.

It is an arithmetic number, because the mean of its divisors is an integer number (11828515744).

Almost surely, 2^23657031487 is an apocalyptic number.

23657031487 is a deficient number, since it is larger than the sum of its proper divisors (1).

23657031487 is an equidigital number, since it uses as much as digits as its factorization.

23657031487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 23657031487 in words is "twenty-three billion, six hundred fifty-seven million, thirty-one thousand, four hundred eighty-seven".