23001242987 has 2 divisors, whose sum is σ = 23001242988. Its totient is φ = 23001242986.

The previous prime is 23001242983. The next prime is 23001243053. The reversal of 23001242987 is 78924210032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23001242987 - 2² = 23001242983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23001242987.

It is not a weakly prime, because it can be changed into another prime (23001242983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11500621493 + 11500621494.

It is an arithmetic number, because the mean of its divisors is an integer number (11500621494).

Almost surely, 2^23001242987 is an apocalyptic number.

23001242987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23001242987 is an equidigital number, since it uses as much as digits as its factorization.

23001242987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 23001242987 in words is "twenty-three billion, one million, two hundred forty-two thousand, nine hundred eighty-seven".