1113203 has 12 divisors (see below), whose sum is σ = 1379088. Its totient is φ = 879840.

The previous prime is 1113199. The next prime is 1113221. The reversal of 1113203 is 3023111.

It is not a de Polignac number, because 1113203 - 2² = 1113199 is a prime.

It is a super-3 number, since 3×1113203³ = 4138513334778649281, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 713 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (114924).

2^1113203 is an apocalyptic number.

1113203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1113203 is a deficient number, since it is larger than the sum of its proper divisors (265885).

1113203 is an equidigital number, since it uses as much as digits as its factorization.

1113203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1113203 is about 1055.0843568170. The cubic root of 1113203 is about 103.6393759675.

Adding to 1113203 its reverse (3023111), we get a palindrome (4136314).

The spelling of 1113203 in words is "one million, one hundred thirteen thousand, two hundred three".