20207313 has 40 divisors (see below), whose sum is σ = 34871232. Its totient is φ = 11422944.

The previous prime is 20207311. The next prime is 20207329. The reversal of 20207313 is 31370202.

It is not a de Polignac number, because 20207313 - 2¹ = 20207311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20207311) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 88906 + ... + 89132.

Almost surely, 2^20207313 is an apocalyptic number.

It is an amenable number.

20207313 is a deficient number, since it is larger than the sum of its proper divisors (14663919).

20207313 is a wasteful number, since it uses less digits than its factorization.

20207313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 20207313 is about 4495.2544978010. The cubic root of 20207313 is about 272.3764296786.

Adding to 20207313 its reverse (31370202), we get a palindrome (51577515).

The spelling of 20207313 in words is "twenty million, two hundred seven thousand, three hundred thirteen".