1131322312 has 16 divisors (see below), whose sum is σ = 2161253340. Its totient is φ = 554988096.

The previous prime is 1131322267. The next prime is 1131322327. The reversal of 1131322312 is 2132231311.

It can be written as a sum of positive squares in 2 ways, for example, as 1119170116 + 12152196 = 33454^2 + 3486^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1131322312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333683 + ... + 1334530.

Almost surely, 2^1131322312 is an apocalyptic number.

It is an amenable number.

1131322312 is a deficient number, since it is larger than the sum of its proper divisors (1029931028).

1131322312 is a wasteful number, since it uses less digits than its factorization.

1131322312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668272 (or 2668268 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1131322312 is about 33635.1350822321. The cubic root of 1131322312 is about 1041.9865604420.

Adding to 1131322312 its reverse (2132231311), we get a palindrome (3263553623).

The spelling of 1131322312 in words is "one billion, one hundred thirty-one million, three hundred twenty-two thousand, three hundred twelve".