20231939 has 8 divisors (see below), whose sum is σ = 24900960. Its totient is φ = 16007616.

The previous prime is 20231929. The next prime is 20231951. The reversal of 20231939 is 93913202.

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 20231939 - 2¹² = 20227843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231909) 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, 111074 + ... + 111255.

It is an arithmetic number, because the mean of its divisors is an integer number (3112620).

Almost surely, 2^20231939 is an apocalyptic number.

20231939 is a deficient number, since it is larger than the sum of its proper divisors (4669021).

20231939 is a wasteful number, since it uses less digits than its factorization.

20231939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222349.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 20231939 is about 4497.9927745607. The cubic root of 20231939 is about 272.4870302162.

It can be divided in two parts, 2023193 and 9, that added together give a palindrome (2023202).

The spelling of 20231939 in words is "twenty million, two hundred thirty-one thousand, nine hundred thirty-nine".