1131704144 has 80 divisors (see below), whose sum is σ = 2550372480. Its totient is φ = 482549760.

The previous prime is 1131704137. The next prime is 1131704159. The reversal of 1131704144 is 4414071311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114104 + ... + 123624.

It is an arithmetic number, because the mean of its divisors is an integer number (31879656).

Almost surely, 2^1131704144 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 1131704144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275186240).

1131704144 is an abundant number, since it is smaller than the sum of its proper divisors (1418668336).

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

1131704144 is a wasteful number, since it uses less digits than its factorization.

1131704144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588 (or 9582 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1131704144 is about 33640.8106917773. The cubic root of 1131704144 is about 1042.1037740353.

Adding to 1131704144 its reverse (4414071311), we get a palindrome (5545775455).

The spelling of 1131704144 in words is "one billion, one hundred thirty-one million, seven hundred four thousand, one hundred forty-four".