1131443300 has 36 divisors (see below), whose sum is σ = 2644098996. Its totient is φ = 417763200.

The previous prime is 1131443297. The next prime is 1131443303. The reversal of 1131443300 is 33441311.

It is an interprime number because it is at equal distance from previous prime (1131443297) and next prime (1131443303).

It can be written as a sum of positive squares in 6 ways, for example, as 216501796 + 914941504 = 14714^2 + 30248^2 .

It is a super-2 number, since 2×1131443300² = 2560327882229780000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1131443303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433871 + ... + 436470.

Almost surely, 2^1131443300 is an apocalyptic number.

1131443300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131443300 is an abundant number, since it is smaller than the sum of its proper divisors (1512655696).

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

1131443300 is a wasteful number, since it uses less digits than its factorization.

1131443300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870368 (or 870361 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1131443300 is about 33636.9335701101. The cubic root of 1131443300 is about 1042.0237038140.

Adding to 1131443300 its reverse (33441311), we get a palindrome (1164884611).

The spelling of 1131443300 in words is "one billion, one hundred thirty-one million, four hundred forty-three thousand, three hundred".