23171001839 has 4 divisors (see below), whose sum is σ = 23181474456. Its totient is φ = 23160529224.

The previous prime is 23171001823. The next prime is 23171001881. The reversal of 23171001839 is 93810017132.

It is a happy number.

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 23171001839 - 2⁴ = 23171001823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23171001799 and 23171001808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23171001899) 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, 5232989 + ... + 5237414.

It is an arithmetic number, because the mean of its divisors is an integer number (5795368614).

Almost surely, 2^23171001839 is an apocalyptic number.

23171001839 is a deficient number, since it is larger than the sum of its proper divisors (10472617).

23171001839 is a wasteful number, since it uses less digits than its factorization.

23171001839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10472616.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 23171001839 in words is "twenty-three billion, one hundred seventy-one million, one thousand, eight hundred thirty-nine".