1131302200 has 144 divisors (see below), whose sum is σ = 3078820800. Its totient is φ = 385459200.

The previous prime is 1131302197. The next prime is 1131302203. The reversal of 1131302200 is 22031311.

It is an interprime number because it is at equal distance from previous prime (1131302197) and next prime (1131302203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131302203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2361561 + ... + 2362039.

It is an arithmetic number, because the mean of its divisors is an integer number (21380700).

Almost surely, 2^1131302200 is an apocalyptic number.

1131302200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131302200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1539410400).

1131302200 is an abundant number, since it is smaller than the sum of its proper divisors (1947518600).

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

1131302200 is a wasteful number, since it uses less digits than its factorization.

1131302200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1131302200 is about 33634.8361078213. The cubic root of 1131302200 is about 1041.9803857921.

Adding to 1131302200 its reverse (22031311), we get a palindrome (1153333511).

The spelling of 1131302200 in words is "one billion, one hundred thirty-one million, three hundred two thousand, two hundred".