1111453203 has 16 divisors (see below), whose sum is σ = 1782782720. Its totient is φ = 601688736.

The previous prime is 1111453201. The next prime is 1111453223. The reversal of 1111453203 is 3023541111.

It is not a de Polignac number, because 1111453203 - 2¹ = 1111453201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111453203.

It is not an unprimeable number, because it can be changed into a prime (1111453201) 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, 1392400 + ... + 1393197.

It is an arithmetic number, because the mean of its divisors is an integer number (111423920).

Almost surely, 2^1111453203 is an apocalyptic number.

1111453203 is a deficient number, since it is larger than the sum of its proper divisors (671329517).

1111453203 is a wasteful number, since it uses less digits than its factorization.

1111453203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785626.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1111453203 is about 33338.4643167618. The cubic root of 1111453203 is about 1035.8504536480.

Adding to 1111453203 its reverse (3023541111), we get a palindrome (4134994314).

The spelling of 1111453203 in words is "one billion, one hundred eleven million, four hundred fifty-three thousand, two hundred three".