20013107 has 2 divisors, whose sum is σ = 20013108. Its totient is φ = 20013106.

The previous prime is 20013083. The next prime is 20013109. The reversal of 20013107 is 70131002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013107 - 2¹⁸ = 19750963 is a prime.

Together with 20013109, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20013091 and 20013100.

It is not a weakly prime, because it can be changed into another prime (20013109) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006553 + 10006554.

It is an arithmetic number, because the mean of its divisors is an integer number (10006554).

Almost surely, 2^20013107 is an apocalyptic number.

20013107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013107 is an equidigital number, since it uses as much as digits as its factorization.

20013107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20013107 is about 4473.6011221386. The cubic root of 20013107 is about 271.5010451637.

Adding to 20013107 its reverse (70131002), we get a palindrome (90144109).

The spelling of 20013107 in words is "twenty million, thirteen thousand, one hundred seven".