1131343344 has 120 divisors (see below), whose sum is σ = 3218512752. Its totient is φ = 370944000.

The previous prime is 1131343303. The next prime is 1131343363. The reversal of 1131343344 is 4433431311.

1131343344 is a `hidden beast` number, since 1 + 1 + 313 + 4 + 3 + 344 = 666.

It is a super-3 number, since 3×1131343344³ (a number of 28 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4084134 + ... + 4084410.

Almost surely, 2^1131343344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131343344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609256376).

1131343344 is an abundant number, since it is smaller than the sum of its proper divisors (2087169408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131343344 is a wasteful number, since it uses less digits than its factorization.

1131343344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 646 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 1131343344 is about 33635.4477300362. The cubic root of 1131343344 is about 1041.9930174659.

Adding to 1131343344 its reverse (4433431311), we get a palindrome (5564774655).

The spelling of 1131343344 in words is "one billion, one hundred thirty-one million, three hundred forty-three thousand, three hundred forty-four".