23931983 has 4 divisors (see below), whose sum is σ = 24972528. Its totient is φ = 22891440.

The previous prime is 23931979. The next prime is 23932003. The reversal of 23931983 is 38913932.

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

It is not a de Polignac number, because 23931983 - 2² = 23931979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23931913) 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, 520238 + ... + 520283.

It is an arithmetic number, because the mean of its divisors is an integer number (6243132).

Almost surely, 2^23931983 is an apocalyptic number.

23931983 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23931983 is a deficient number, since it is larger than the sum of its proper divisors (1040545).

23931983 is a wasteful number, since it uses less digits than its factorization.

23931983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040544.

The product of its digits is 34992, while the sum is 38.

The square root of 23931983 is about 4892.0326041432. The cubic root of 23931983 is about 288.1771632115.

The spelling of 23931983 in words is "twenty-three million, nine hundred thirty-one thousand, nine hundred eighty-three".