20013319 has 2 divisors, whose sum is σ = 20013320. Its totient is φ = 20013318.

The previous prime is 20013313. The next prime is 20013347. The reversal of 20013319 is 91331002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20013319 - 2³ = 20013311 is a prime.

It is a super-2 number, since 2×20013319² = 801065874791522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20013296 and 20013305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006659 + 10006660.

It is an arithmetic number, because the mean of its divisors is an integer number (10006660).

Almost surely, 2^20013319 is an apocalyptic number.

20013319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013319 is an equidigital number, since it uses as much as digits as its factorization.

20013319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20013319 is about 4473.6248166336. The cubic root of 20013319 is about 271.5020038358.

The spelling of 20013319 in words is "twenty million, thirteen thousand, three hundred nineteen".