1131320204 has 24 divisors (see below), whose sum is σ = 2264613120. Its totient is φ = 484428816.

The previous prime is 1131320171. The next prime is 1131320209. The reversal of 1131320204 is 4020231311.

It is not an unprimeable number, because it can be changed into a prime (1131320209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16217 + ... + 50255.

It is an arithmetic number, because the mean of its divisors is an integer number (94358880).

Almost surely, 2^1131320204 is an apocalyptic number.

1131320204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1131320204 is an abundant number, since it is smaller than the sum of its proper divisors (1133292916).

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

1131320204 is a wasteful number, since it uses less digits than its factorization.

1131320204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35237 (or 35235 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1131320204 is about 33635.1037459378. The cubic root of 1131320204 is about 1041.9859132616.

Adding to 1131320204 its reverse (4020231311), we get a palindrome (5151551515).

The spelling of 1131320204 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, two hundred four".