23120797187 has 4 divisors (see below), whose sum is σ = 23143443456. Its totient is φ = 23098150920.

The previous prime is 23120797123. The next prime is 23120797223. The reversal of 23120797187 is 78179702132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23120797187 - 2⁶ = 23120797123 is a prime.

It is a super-2 number, since 2×23120797187² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23120787187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11321603 + ... + 11323644.

It is an arithmetic number, because the mean of its divisors is an integer number (5785860864).

Almost surely, 2^23120797187 is an apocalyptic number.

23120797187 is a deficient number, since it is larger than the sum of its proper divisors (22646269).

23120797187 is a wasteful number, since it uses less digits than its factorization.

23120797187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22646268.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 23120797187 in words is "twenty-three billion, one hundred twenty million, seven hundred ninety-seven thousand, one hundred eighty-seven".