20323203239 has 2 divisors, whose sum is σ = 20323203240. Its totient is φ = 20323203238.

The previous prime is 20323203227. The next prime is 20323203281. The reversal of 20323203239 is 93230232302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323203239 - 2³² = 16028235943 is a prime.

It is a super-2 number, since 2×20323203239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323203209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161601619 + 10161601620.

It is an arithmetic number, because the mean of its divisors is an integer number (10161601620).

Almost surely, 2^20323203239 is an apocalyptic number.

20323203239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323203239 is an equidigital number, since it uses as much as digits as its factorization.

20323203239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 29.

The spelling of 20323203239 in words is "twenty billion, three hundred twenty-three million, two hundred three thousand, two hundred thirty-nine".