1132831440 has 160 divisors (see below), whose sum is σ = 4202231040. Its totient is φ = 278843904.

The previous prime is 1132831423. The next prime is 1132831451. The reversal of 1132831440 is 441382311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7909 + ... + 48251.

It is an arithmetic number, because the mean of its divisors is an integer number (26263944).

Almost surely, 2^1132831440 is an apocalyptic number.

1132831440 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 1132831440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101115520).

1132831440 is an abundant number, since it is smaller than the sum of its proper divisors (3069399600).

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

1132831440 is a wasteful number, since it uses less digits than its factorization.

1132831440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40378 (or 40366 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1132831440 is about 33657.5614089910. The cubic root of 1132831440 is about 1042.4496740884.

The spelling of 1132831440 in words is "one billion, one hundred thirty-two million, eight hundred thirty-one thousand, four hundred forty".