20231339 has 2 divisors, whose sum is σ = 20231340. Its totient is φ = 20231338.

The previous prime is 20231303. The next prime is 20231359. The reversal of 20231339 is 93313202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231339 - 2⁸ = 20231083 is a prime.

It is not a weakly prime, because it can be changed into another prime (20231359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115669 + 10115670.

It is an arithmetic number, because the mean of its divisors is an integer number (10115670).

Almost surely, 2^20231339 is an apocalyptic number.

20231339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231339 is an equidigital number, since it uses as much as digits as its factorization.

20231339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 20231339 is about 4497.9260776496. The cubic root of 20231339 is about 272.4843365572.

The spelling of 20231339 in words is "twenty million, two hundred thirty-one thousand, three hundred thirty-nine".