20135307 has 16 divisors (see below), whose sum is σ = 28728320. Its totient is φ = 12506400.

The previous prime is 20135267. The next prime is 20135321. The reversal of 20135307 is 70353102.

It is a happy number.

It is not a de Polignac number, because 20135307 - 2¹² = 20131211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582 + ... + 6372.

It is an arithmetic number, because the mean of its divisors is an integer number (1795520).

Almost surely, 2^20135307 is an apocalyptic number.

20135307 is a deficient number, since it is larger than the sum of its proper divisors (8593013).

20135307 is a wasteful number, since it uses less digits than its factorization.

20135307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 20135307 is about 4487.2382374909. The cubic root of 20135307 is about 272.0525192344.

Adding to 20135307 its reverse (70353102), we get a palindrome (90488409).

The spelling of 20135307 in words is "twenty million, one hundred thirty-five thousand, three hundred seven".