20322919 has 2 divisors, whose sum is σ = 20322920. Its totient is φ = 20322918.

The previous prime is 20322833. The next prime is 20322971. The reversal of 20322919 is 91922302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20322919 - 2⁷ = 20322791 is a prime.

It is a super-2 number, since 2×20322919² = 826042073361122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161459 + 10161460.

It is an arithmetic number, because the mean of its divisors is an integer number (10161460).

Almost surely, 2^20322919 is an apocalyptic number.

20322919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322919 is an equidigital number, since it uses as much as digits as its factorization.

20322919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20322919 is about 4508.0948304134. The cubic root of 20322919 is about 272.8948639602.

The spelling of 20322919 in words is "twenty million, three hundred twenty-two thousand, nine hundred nineteen".