1131313323 has 24 divisors (see below), whose sum is σ = 1775850048. Its totient is φ = 638669136.

The previous prime is 1131313319. The next prime is 1131313387. The reversal of 1131313323 is 3233131311.

It is not a de Polignac number, because 1131313323 - 2² = 1131313319 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1131313323.

It is not an unprimeable number, because it can be changed into a prime (1131312323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34161 + ... + 58562.

It is an arithmetic number, because the mean of its divisors is an integer number (73993752).

Almost surely, 2^1131313323 is an apocalyptic number.

1131313323 is a deficient number, since it is larger than the sum of its proper divisors (644536725).

1131313323 is an equidigital number, since it uses as much as digits as its factorization.

1131313323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92823 (or 92816 counting only the distinct ones).

The product of its digits is 486, while the sum is 21.

The square root of 1131313323 is about 33635.0014568158. The cubic root of 1131313323 is about 1041.9838007092.

Adding to 1131313323 its reverse (3233131311), we get a palindrome (4364444634).

The spelling of 1131313323 in words is "one billion, one hundred thirty-one million, three hundred thirteen thousand, three hundred twenty-three".