23208912111 has 24 divisors (see below), whose sum is σ = 38873333632. Its totient is φ = 12056576400.

The previous prime is 23208912079. The next prime is 23208912113. The reversal of 23208912111 is 11121980232.

It is not a de Polignac number, because 23208912111 - 2⁵ = 23208912079 is a prime.

It is a super-2 number, since 2×23208912111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23208912113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4564345 + ... + 4569426.

Almost surely, 2^23208912111 is an apocalyptic number.

23208912111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23208912111 is a deficient number, since it is larger than the sum of its proper divisors (15664421521).

23208912111 is a wasteful number, since it uses less digits than its factorization.

23208912111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133803 (or 9133792 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 23208912111 in words is "twenty-three billion, two hundred eight million, nine hundred twelve thousand, one hundred eleven".