20371339 has 2 divisors, whose sum is σ = 20371340. Its totient is φ = 20371338.

The previous prime is 20371333. The next prime is 20371357. The reversal of 20371339 is 93317302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20371339 - 2³ = 20371331 is a prime.

It is not a weakly prime, because it can be changed into another prime (20371331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10185669 + 10185670.

It is an arithmetic number, because the mean of its divisors is an integer number (10185670).

Almost surely, 2^20371339 is an apocalyptic number.

20371339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20371339 is an equidigital number, since it uses as much as digits as its factorization.

20371339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 20371339 is about 4513.4619750254. The cubic root of 20371339 is about 273.1114189617. Note that the first 3 decimals are identical.

The spelling of 20371339 in words is "twenty million, three hundred seventy-one thousand, three hundred thirty-nine".