1131322323 has 16 divisors (see below), whose sum is σ = 1554291200. Its totient is φ = 731418336.

The previous prime is 1131322267. The next prime is 1131322327. The reversal of 1131322323 is 3232231311.

It is not a de Polignac number, because 1131322323 - 2⁸ = 1131322067 is a prime.

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 1131322323.

It is not an unprimeable number, because it can be changed into a prime (1131322327) 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, 17478 + ... + 50676.

It is an arithmetic number, because the mean of its divisors is an integer number (97143200).

Almost surely, 2^1131322323 is an apocalyptic number.

1131322323 is a deficient number, since it is larger than the sum of its proper divisors (422968877).

1131322323 is a wasteful number, since it uses less digits than its factorization.

1131322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33546.

The product of its digits is 648, while the sum is 21.

The square root of 1131322323 is about 33635.1352457516. The cubic root of 1131322323 is about 1041.9865638192.

Adding to 1131322323 its reverse (3232231311), we get a palindrome (4363553634).

The spelling of 1131322323 in words is "one billion, one hundred thirty-one million, three hundred twenty-two thousand, three hundred twenty-three".