20313315 has 32 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 9848160.

The previous prime is 20313281. The next prime is 20313343. The reversal of 20313315 is 51331302.

It is not a de Polignac number, because 20313315 - 2¹⁹ = 19789027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5355 + ... + 8324.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^20313315 is an apocalyptic number.

20313315 is a deficient number, since it is larger than the sum of its proper divisors (19085085).

20313315 is a wasteful number, since it uses less digits than its factorization.

20313315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13704 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 20313315 is about 4507.0295095550. The cubic root of 20313315 is about 272.8518698865.

Adding to 20313315 its reverse (51331302), we get a palindrome (71644617).

The spelling of 20313315 in words is "twenty million, three hundred thirteen thousand, three hundred fifteen".