23387316021 has 12 divisors (see below), whose sum is σ = 35250447648. Its totient is φ = 14913650664.

The previous prime is 23387315983. The next prime is 23387316031. The reversal of 23387316021 is 12061378332.

23387316021 is a `hidden beast` number, since 2 + 338 + 7 + 316 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 23387316021 - 2¹⁵ = 23387283253 is a prime.

It is a super-2 number, since 2×23387316021² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23387316031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56490895 + ... + 56491308.

It is an arithmetic number, because the mean of its divisors is an integer number (2937537304).

Almost surely, 2^23387316021 is an apocalyptic number.

It is an amenable number.

23387316021 is a deficient number, since it is larger than the sum of its proper divisors (11863131627).

23387316021 is a wasteful number, since it uses less digits than its factorization.

23387316021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112982232 (or 112982229 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 23387316021 in words is "twenty-three billion, three hundred eighty-seven million, three hundred sixteen thousand, twenty-one".