20307107 has 2 divisors, whose sum is σ = 20307108. Its totient is φ = 20307106.

The previous prime is 20307103. The next prime is 20307121. The reversal of 20307107 is 70170302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20307107 - 2² = 20307103 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20307103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153553 + 10153554.

It is an arithmetic number, because the mean of its divisors is an integer number (10153554).

Almost surely, 2^20307107 is an apocalyptic number.

20307107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20307107 is an equidigital number, since it uses as much as digits as its factorization.

20307107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 20307107 is about 4506.3407549807. The cubic root of 20307107 is about 272.8240714205.

Adding to 20307107 its reverse (70170302), we get a palindrome (90477409).

The spelling of 20307107 in words is "twenty million, three hundred seven thousand, one hundred seven".