1131100000 has 72 divisors (see below), whose sum is σ = 2783634336. Its totient is φ = 452400000.

The previous prime is 1131099997. The next prime is 1131100031. The reversal of 1131100000 is 11311.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94345 + ... + 105655.

It is an arithmetic number, because the mean of its divisors is an integer number (38661588).

Almost surely, 2^1131100000 is an apocalyptic number.

1131100000 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 1131100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391817168).

1131100000 is an abundant number, since it is smaller than the sum of its proper divisors (1652534336).

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

1131100000 is an frugal number, since it uses more digits than its factorization.

1131100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11346 (or 11318 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 1131100000 is about 33631.8301613219. The cubic root of 1131100000 is about 1041.9183036512.

Adding to 1131100000 its reverse (11311), we get a palindrome (1131111311).

1131100000 divided by its reverse (11311) gives a 5-th power (100000 = 10⁵).

The spelling of 1131100000 in words is "one billion, one hundred thirty-one million, one hundred thousand".