1131225300 has 54 divisors (see below), whose sum is σ = 3545765678. Its totient is φ = 301659840.

The previous prime is 1131225283. The next prime is 1131225313. The reversal of 1131225300 is 35221311.

1131225300 is a `hidden beast` number, since 1 + 13 + 122 + 530 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13927824 + 1117297476 = 3732^2 + 33426^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 627559 + ... + 629358.

Almost surely, 2^1131225300 is an apocalyptic number.

1131225300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131225300 is an abundant number, since it is smaller than the sum of its proper divisors (2414540378).

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

1131225300 is a wasteful number, since it uses less digits than its factorization.

1131225300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256937 (or 1256927 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1131225300 is about 33633.6929283717. The cubic root of 1131225300 is about 1041.9567758002.

Adding to 1131225300 its reverse (35221311), we get a palindrome (1166446611).

The spelling of 1131225300 in words is "one billion, one hundred thirty-one million, two hundred twenty-five thousand, three hundred".