20331107 has 2 divisors, whose sum is σ = 20331108. Its totient is φ = 20331106.

The previous prime is 20331079. The next prime is 20331109. The reversal of 20331107 is 70113302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20331107 - 2⁶ = 20331043 is a prime.

Together with 20331109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20331109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165553 + 10165554.

It is an arithmetic number, because the mean of its divisors is an integer number (10165554).

Almost surely, 2^20331107 is an apocalyptic number.

20331107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331107 is an equidigital number, since it uses as much as digits as its factorization.

20331107 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20331107 is about 4509.0028831217. The cubic root of 20331107 is about 272.9315083538.

Adding to 20331107 its reverse (70113302), we get a palindrome (90444409).

The spelling of 20331107 in words is "twenty million, three hundred thirty-one thousand, one hundred seven".