1131303120 has 80 divisors (see below), whose sum is σ = 3601852800. Its totient is φ = 293524992.

The previous prime is 1131303109. The next prime is 1131303161. The reversal of 1131303120 is 213031311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1131303120.

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 15 ways as a sum of consecutive naturals, for example, 54820 + ... + 72579.

It is an arithmetic number, because the mean of its divisors is an integer number (45023160).

Almost surely, 2^1131303120 is an apocalyptic number.

1131303120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131303120 is an abundant number, since it is smaller than the sum of its proper divisors (2470549680).

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

1131303120 is a wasteful number, since it uses less digits than its factorization.

1131303120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127452 (or 127446 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1131303120 is about 33634.8497841153. The cubic root of 1131303120 is about 1041.9806682458.

Adding to 1131303120 its reverse (213031311), we get a palindrome (1344334431).

Subtracting from 1131303120 its reverse (213031311), we obtain a square (918271809 = 30303²).

The spelling of 1131303120 in words is "one billion, one hundred thirty-one million, three hundred three thousand, one hundred twenty".