1123112403 has 12 divisors (see below), whose sum is σ = 1854026928. Its totient is φ = 641778480.

The previous prime is 1123112323. The next prime is 1123112407. The reversal of 1123112403 is 3042113211.

1123112403 is a `hidden beast` number, since 112 + 311 + 240 + 3 = 666.

It is not a de Polignac number, because 1123112403 - 2⁸ = 1123112147 is a prime.

It is a super-2 number, since 2×1123112403² = 2522762939544868818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123112407) 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, 8913528 + ... + 8913653.

It is an arithmetic number, because the mean of its divisors is an integer number (154502244).

Almost surely, 2^1123112403 is an apocalyptic number.

1123112403 is a deficient number, since it is larger than the sum of its proper divisors (730914525).

1123112403 is a wasteful number, since it uses less digits than its factorization.

1123112403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17827194 (or 17827191 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1123112403 is about 33512.8692146763. The cubic root of 1123112403 is about 1039.4599029334.

Adding to 1123112403 its reverse (3042113211), we get a palindrome (4165225614).

It can be divided in two parts, 1123 and 112403, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 1123112403 in words is "one billion, one hundred twenty-three million, one hundred twelve thousand, four hundred three".