23200012091 has 4 divisors (see below), whose sum is σ = 23203377912. Its totient is φ = 23196646272.

The previous prime is 23200012067. The next prime is 23200012109. The reversal of 23200012091 is 19021000232.

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 23200012091 - 2¹⁰ = 23200011067 is a prime.

It is a super-2 number, since 2×23200012091² (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 (23200012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672550 + ... + 1686363.

It is an arithmetic number, because the mean of its divisors is an integer number (5800844478).

Almost surely, 2^23200012091 is an apocalyptic number.

23200012091 is a deficient number, since it is larger than the sum of its proper divisors (3365821).

23200012091 is an equidigital number, since it uses as much as digits as its factorization.

23200012091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365820.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 23200012091 in words is "twenty-three billion, two hundred million, twelve thousand, ninety-one".