20339313191 has 2 divisors, whose sum is σ = 20339313192. Its totient is φ = 20339313190.

The previous prime is 20339313167. The next prime is 20339313209. The reversal of 20339313191 is 19131393302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20339313191 - 2²⁶ = 20272204327 is a prime.

It is a super-2 number, since 2×20339313191² (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 (20339313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10169656595 + 10169656596.

It is an arithmetic number, because the mean of its divisors is an integer number (10169656596).

Almost surely, 2^20339313191 is an apocalyptic number.

20339313191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20339313191 is an equidigital number, since it uses as much as digits as its factorization.

20339313191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 20339313191 in words is "twenty billion, three hundred thirty-nine million, three hundred thirteen thousand, one hundred ninety-one".