1113111603 has 6 divisors (see below), whose sum is σ = 1607827884. Its totient is φ = 742074396.

The previous prime is 1113111577. The next prime is 1113111653. The reversal of 1113111603 is 3061113111.

It is not a de Polignac number, because 1113111603 - 2⁶ = 1113111539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1113111653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61839525 + ... + 61839542.

It is an arithmetic number, because the mean of its divisors is an integer number (267971314).

Almost surely, 2^1113111603 is an apocalyptic number.

1113111603 is a deficient number, since it is larger than the sum of its proper divisors (494716281).

1113111603 is a wasteful number, since it uses less digits than its factorization.

1113111603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123679073 (or 123679070 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1113111603 is about 33363.3272171707. The cubic root of 1113111603 is about 1036.3653953152.

Adding to 1113111603 its reverse (3061113111), we get a palindrome (4174224714).

The spelling of 1113111603 in words is "one billion, one hundred thirteen million, one hundred eleven thousand, six hundred three".