20323230240239 has 2 divisors, whose sum is σ = 20323230240240. Its totient is φ = 20323230240238.

The previous prime is 20323230240217. The next prime is 20323230240251. The reversal of 20323230240239 is 93204203232302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323230240239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323230240199 and 20323230240208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323230242239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161615120119 + 10161615120120.

It is an arithmetic number, because the mean of its divisors is an integer number (10161615120120).

Almost surely, 2^{20323230240239} is an apocalyptic number.

20323230240239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323230240239 is an equidigital number, since it uses as much as digits as its factorization.

20323230240239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 35.

The spelling of 20323230240239 in words is "twenty trillion, three hundred twenty-three billion, two hundred thirty million, two hundred forty thousand, two hundred thirty-nine".