23250211987 has 2 divisors, whose sum is σ = 23250211988. Its totient is φ = 23250211986.

The previous prime is 23250211961. The next prime is 23250212017. The reversal of 23250211987 is 78911205232.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23250211987 is a prime.

It is not a weakly prime, because it can be changed into another prime (23250211487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11625105993 + 11625105994.

It is an arithmetic number, because the mean of its divisors is an integer number (11625105994).

Almost surely, 2^23250211987 is an apocalyptic number.

23250211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23250211987 is an equidigital number, since it uses as much as digits as its factorization.

23250211987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 23250211987 in words is "twenty-three billion, two hundred fifty million, two hundred eleven thousand, nine hundred eighty-seven".