1123131303 has 36 divisors (see below), whose sum is σ = 1892306520. Its totient is φ = 640041696.

The previous prime is 1123131293. The next prime is 1123131311. The reversal of 1123131303 is 3031313211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1123131303 is a prime.

It is a super-2 number, since 2×1123131303² = 2522847847556955618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123131103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 168276 + ... + 174822.

It is an arithmetic number, because the mean of its divisors is an integer number (52564070).

Almost surely, 2^1123131303 is an apocalyptic number.

1123131303 is a deficient number, since it is larger than the sum of its proper divisors (769175217).

1123131303 is a wasteful number, since it uses less digits than its factorization.

1123131303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956 (or 6946 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1123131303 is about 33513.1511947176. The cubic root of 1123131303 is about 1039.4657336594.

Adding to 1123131303 its reverse (3031313211), we get a palindrome (4154444514).

The spelling of 1123131303 in words is "one billion, one hundred twenty-three million, one hundred thirty-one thousand, three hundred three".