12113903 has 4 divisors (see below), whose sum is σ = 12166128. Its totient is φ = 12061680.

The previous prime is 12113897. The next prime is 12113923. The reversal of 12113903 is 30931121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30931121 = 13 ⋅2379317.

It is a cyclic number.

It is not a de Polignac number, because 12113903 - 2¹⁸ = 11851759 is a prime.

It is a super-3 number, since 3×12113903³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25763 + ... + 26228.

It is an arithmetic number, because the mean of its divisors is an integer number (3041532).

Almost surely, 2^12113903 is an apocalyptic number.

12113903 is a deficient number, since it is larger than the sum of its proper divisors (52225).

12113903 is an equidigital number, since it uses as much as digits as its factorization.

12113903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52224.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12113903 is about 3480.5032682071. The cubic root of 12113903 is about 229.6649374508.

The spelling of 12113903 in words is "twelve million, one hundred thirteen thousand, nine hundred three".