23030311987 has 2 divisors, whose sum is σ = 23030311988. Its totient is φ = 23030311986.

The previous prime is 23030311973. The next prime is 23030312057. The reversal of 23030311987 is 78911303032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23030311987 is a prime.

It is not a weakly prime, because it can be changed into another prime (23030311937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515155993 + 11515155994.

It is an arithmetic number, because the mean of its divisors is an integer number (11515155994).

Almost surely, 2^23030311987 is an apocalyptic number.

23030311987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23030311987 is an equidigital number, since it uses as much as digits as its factorization.

23030311987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 23030311987 in words is "twenty-three billion, thirty million, three hundred eleven thousand, nine hundred eighty-seven".