20321310319 has 2 divisors, whose sum is σ = 20321310320. Its totient is φ = 20321310318.

The previous prime is 20321310173. The next prime is 20321310323. The reversal of 20321310319 is 91301312302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20321310319 - 2²⁷ = 20187092591 is a prime.

It is a super-2 number, since 2×20321310319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20321310293 and 20321310302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20321310329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160655159 + 10160655160.

It is an arithmetic number, because the mean of its divisors is an integer number (10160655160).

Almost surely, 2^20321310319 is an apocalyptic number.

20321310319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321310319 is an equidigital number, since it uses as much as digits as its factorization.

20321310319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 20321310319 in words is "twenty billion, three hundred twenty-one million, three hundred ten thousand, three hundred nineteen".