23291881939 has 8 divisors (see below), whose sum is σ = 23877149120. Its totient is φ = 22708596456.

The previous prime is 23291881931. The next prime is 23291881957. The reversal of 23291881939 is 93918819232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23291881939 - 2³ = 23291881931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23291881939.

It is not an unprimeable number, because it can be changed into a prime (23291881931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471609 + ... + 518650.

It is an arithmetic number, because the mean of its divisors is an integer number (2984643640).

Almost surely, 2^23291881939 is an apocalyptic number.

23291881939 is a deficient number, since it is larger than the sum of its proper divisors (585267181).

23291881939 is an equidigital number, since it uses as much as digits as its factorization.

23291881939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990849.

The product of its digits is 1679616, while the sum is 55.

The spelling of 23291881939 in words is "twenty-three billion, two hundred ninety-one million, eight hundred eighty-one thousand, nine hundred thirty-nine".