20302313 has 8 divisors (see below), whose sum is σ = 20856960. Its totient is φ = 19754800.

The previous prime is 20302309. The next prime is 20302319. The reversal of 20302313 is 31320302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20302313 - 2² = 20302309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4256 + ... + 7662.

It is an arithmetic number, because the mean of its divisors is an integer number (2607120).

Almost surely, 2^20302313 is an apocalyptic number.

It is an amenable number.

20302313 is a deficient number, since it is larger than the sum of its proper divisors (554647).

20302313 is a wasteful number, since it uses less digits than its factorization.

20302313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20302313 is about 4505.8088064187. The cubic root of 20302313 is about 272.8026007512.

Adding to 20302313 its reverse (31320302), we get a palindrome (51622615).

The spelling of 20302313 in words is "twenty million, three hundred two thousand, three hundred thirteen".