1131250880 has 112 divisors (see below), whose sum is σ = 2902183680. Its totient is φ = 418618368.

The previous prime is 1131250859. The next prime is 1131250889. The reversal of 1131250880 is 880521311.

It is not an unprimeable number, because it can be changed into a prime (1131250889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259277 + ... + 263603.

Almost surely, 2^1131250880 is an apocalyptic number.

1131250880 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 1131250880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451091840).

1131250880 is an abundant number, since it is smaller than the sum of its proper divisors (1770932800).

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

1131250880 is a wasteful number, since it uses less digits than its factorization.

1131250880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406 (or 4396 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1131250880 is about 33634.0731996587. The cubic root of 1131250880 is about 1041.9646295417.

The spelling of 1131250880 in words is "one billion, one hundred thirty-one million, two hundred fifty thousand, eight hundred eighty".