20113033 has 4 divisors (see below), whose sum is σ = 20388628. Its totient is φ = 19837440.

The previous prime is 20113031. The next prime is 20113043. The reversal of 20113033 is 33031102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13897984 + 6215049 = 3728^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113033 - 2¹ = 20113031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137688 + ... + 137833.

It is an arithmetic number, because the mean of its divisors is an integer number (5097157).

Almost surely, 2^20113033 is an apocalyptic number.

It is an amenable number.

20113033 is a deficient number, since it is larger than the sum of its proper divisors (275595).

20113033 is an equidigital number, since it uses as much as digits as its factorization.

20113033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275594.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20113033 is about 4484.7556232196. The cubic root of 20113033 is about 271.9521659324.

Adding to 20113033 its reverse (33031102), we get a palindrome (53144135).

The spelling of 20113033 in words is "twenty million, one hundred thirteen thousand, thirty-three".