20113307 has 4 divisors (see below), whose sum is σ = 20355720. Its totient is φ = 19870896.

The previous prime is 20113273. The next prime is 20113319. The reversal of 20113307 is 70331102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20113307 - 2¹² = 20109211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121082 + ... + 121247.

It is an arithmetic number, because the mean of its divisors is an integer number (5088930).

Almost surely, 2^20113307 is an apocalyptic number.

20113307 is a deficient number, since it is larger than the sum of its proper divisors (242413).

20113307 is an equidigital number, since it uses as much as digits as its factorization.

20113307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242412.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 20113307 is about 4484.7861710454. The cubic root of 20113307 is about 271.9534008622.

Adding to 20113307 its reverse (70331102), we get a palindrome (90444409).

The spelling of 20113307 in words is "twenty million, one hundred thirteen thousand, three hundred seven".