20113003 has 4 divisors (see below), whose sum is σ = 20122168. Its totient is φ = 20103840.

The previous prime is 20112997. The next prime is 20113013. The reversal of 20113003 is 30031102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30031102 = 2 ⋅15015551.

It is a cyclic number.

It is not a de Polignac number, because 20113003 - 2¹³ = 20104811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113013) 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, 883 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (5030542).

Almost surely, 2^20113003 is an apocalyptic number.

20113003 is a deficient number, since it is larger than the sum of its proper divisors (9165).

20113003 is an equidigital number, since it uses as much as digits as its factorization.

20113003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 20113003 is about 4484.7522785545. The cubic root of 20113003 is about 271.9520307204.

Adding to 20113003 its reverse (30031102), we get a palindrome (50144105).

The spelling of 20113003 in words is "twenty million, one hundred thirteen thousand, three".