1231113303 has 32 divisors (see below), whose sum is σ = 2194137600. Its totient is φ = 666465408.

The previous prime is 1231113283. The next prime is 1231113329. The reversal of 1231113303 is 3033111321.

It is a happy number.

It is not a de Polignac number, because 1231113303 - 2²⁰ = 1230064727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231113343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167826 + ... + 175007.

It is an arithmetic number, because the mean of its divisors is an integer number (68566800).

Almost surely, 2^1231113303 is an apocalyptic number.

1231113303 is a deficient number, since it is larger than the sum of its proper divisors (963024297).

1231113303 is a wasteful number, since it uses less digits than its factorization.

1231113303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342868 (or 342862 counting only the distinct ones).

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

The square root of 1231113303 is about 35087.2242133800. The cubic root of 1231113303 is about 1071.7644347508.

Adding to 1231113303 its reverse (3033111321), we get a palindrome (4264224624).

The spelling of 1231113303 in words is "one billion, two hundred thirty-one million, one hundred thirteen thousand, three hundred three".