1131040240 has 120 divisors (see below), whose sum is σ = 2907407664. Its totient is φ = 408883200.

The previous prime is 1131040201. The next prime is 1131040259. The reversal of 1131040240 is 420401311.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3203904 + ... + 3204256.

Almost surely, 2^1131040240 is an apocalyptic number.

1131040240 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 1131040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453703832).

1131040240 is an abundant number, since it is smaller than the sum of its proper divisors (1776367424).

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

1131040240 is a wasteful number, since it uses less digits than its factorization.

1131040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1131040240 is about 33630.9417055187. The cubic root of 1131040240 is about 1041.8999539225.

Adding to 1131040240 its reverse (420401311), we get a palindrome (1551441551).

The spelling of 1131040240 in words is "one billion, one hundred thirty-one million, forty thousand, two hundred forty".