1131594240 has 480 divisors, whose sum is σ = 4388719104. Its totient is φ = 247726080.

The previous prime is 1131594173. The next prime is 1131594241. The reversal of 1131594240 is 424951311.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1131594198 and 1131594207.

It is not an unprimeable number, because it can be changed into a prime (1131594241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11665872 + ... + 11665968.

Almost surely, 2^1131594240 is an apocalyptic number.

1131594240 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 1131594240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194359552).

1131594240 is an abundant number, since it is smaller than the sum of its proper divisors (3257124864).

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

1131594240 is an equidigital number, since it uses as much as digits as its factorization.

1131594240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1131594240 is about 33639.1771599723. The cubic root of 1131594240 is about 1042.0700387516.

The spelling of 1131594240 in words is "one billion, one hundred thirty-one million, five hundred ninety-four thousand, two hundred forty".