20316719 has 12 divisors (see below), whose sum is σ = 21634704. Its totient is φ = 19075392.

The previous prime is 20316713. The next prime is 20316761. The reversal of 20316719 is 91761302.

It is not a de Polignac number, because 20316719 - 2⁸ = 20316463 is a prime.

It is a super-2 number, since 2×20316719² = 825538141849922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20316691 and 20316700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60119 + ... + 60455.

It is an arithmetic number, because the mean of its divisors is an integer number (1802892).

Almost surely, 2^20316719 is an apocalyptic number.

20316719 is a deficient number, since it is larger than the sum of its proper divisors (1317985).

20316719 is a wasteful number, since it uses less digits than its factorization.

20316719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 20316719 is about 4507.4071260537. The cubic root of 20316719 is about 272.8671100691.

The spelling of 20316719 in words is "twenty million, three hundred sixteen thousand, seven hundred nineteen".