20020320239 has 2 divisors, whose sum is σ = 20020320240. Its totient is φ = 20020320238.

The previous prime is 20020320209. The next prime is 20020320241. The reversal of 20020320239 is 93202302002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020320239 - 2¹⁶ = 20020254703 is a prime.

It is a super-2 number, since 2×20020320239² (a number of 21 digits) contains 22 as substring.

Together with 20020320241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020320209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010160119 + 10010160120.

It is an arithmetic number, because the mean of its divisors is an integer number (10010160120).

Almost surely, 2^20020320239 is an apocalyptic number.

20020320239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020320239 is an equidigital number, since it uses as much as digits as its factorization.

20020320239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The spelling of 20020320239 in words is "twenty billion, twenty million, three hundred twenty thousand, two hundred thirty-nine".