20016313 has 4 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 19590388.

The previous prime is 20016287. The next prime is 20016319. The reversal of 20016313 is 31361002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31361002 = 2 ⋅15680501.

It is a cyclic number.

It is not a de Polignac number, because 20016313 - 2¹⁷ = 19885241 is a prime.

It is a super-2 number, since 2×20016313² = 801305572227938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20016319) 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 in 3 ways as a sum of consecutive naturals, for example, 212893 + ... + 212986.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560).

Almost surely, 2^20016313 is an apocalyptic number.

It is an amenable number.

20016313 is a deficient number, since it is larger than the sum of its proper divisors (425927).

20016313 is an equidigital number, since it uses as much as digits as its factorization.

20016313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425926.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20016313 is about 4473.9594320914. The cubic root of 20016313 is about 271.5155420944.

Adding to 20016313 its reverse (31361002), we get a palindrome (51377315).

The spelling of 20016313 in words is "twenty million, sixteen thousand, three hundred thirteen".