20113019 has 2 divisors, whose sum is σ = 20113020. Its totient is φ = 20113018.

The previous prime is 20113013. The next prime is 20113031. The reversal of 20113019 is 91031102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20113019 - 2²⁰ = 19064443 is a prime.

It is a super-2 number, since 2×20113019² = 809067066588722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112988 and 20113006.

It is not a weakly prime, because it can be changed into another prime (20113013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056509 + 10056510.

It is an arithmetic number, because the mean of its divisors is an integer number (10056510).

Almost surely, 2^20113019 is an apocalyptic number.

20113019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113019 is an equidigital number, since it uses as much as digits as its factorization.

20113019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 20113019 is about 4484.7540623762. The cubic root of 20113019 is about 271.9521028335.

The spelling of 20113019 in words is "twenty million, one hundred thirteen thousand, nineteen".