1113220403 has 16 divisors (see below), whose sum is σ = 1142225280. Its totient is φ = 1084720896.

The previous prime is 1113220387. The next prime is 1113220441. The reversal of 1113220403 is 3040223111.

It is a cyclic number.

It is not a de Polignac number, because 1113220403 - 2⁴ = 1113220387 is a prime.

It is a super-4 number, since 4×1113220403⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113220483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2937068 + ... + 2937446.

It is an arithmetic number, because the mean of its divisors is an integer number (71389080).

Almost surely, 2^1113220403 is an apocalyptic number.

1113220403 is a deficient number, since it is larger than the sum of its proper divisors (29004877).

1113220403 is a wasteful number, since it uses less digits than its factorization.

1113220403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1113220403 is about 33364.9577101485. The cubic root of 1113220403 is about 1036.3991603875.

Adding to 1113220403 its reverse (3040223111), we get a palindrome (4153443514).

The spelling of 1113220403 in words is "one billion, one hundred thirteen million, two hundred twenty thousand, four hundred three".