20231839 has 2 divisors, whose sum is σ = 20231840. Its totient is φ = 20231838.

The previous prime is 20231807. The next prime is 20231843. The reversal of 20231839 is 93813202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231839 - 2⁵ = 20231807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115919 + 10115920.

It is an arithmetic number, because the mean of its divisors is an integer number (10115920).

Almost surely, 2^20231839 is an apocalyptic number.

20231839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231839 is an equidigital number, since it uses as much as digits as its factorization.

20231839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20231839 is about 4497.9816584775. The cubic root of 20231839 is about 272.4865812768.

It can be divided in two parts, 202 and 31839, that added together give a square (32041 = 179²).

The spelling of 20231839 in words is "twenty million, two hundred thirty-one thousand, eight hundred thirty-nine".