1115531340 has 192 divisors, whose sum is σ = 3939425280. Its totient is φ = 229109760.

The previous prime is 1115531317. The next prime is 1115531341. The reversal of 1115531340 is 431355111.

It is a self number, because there is not a number n which added to its sum of digits gives 1115531340.

It is not an unprimeable number, because it can be changed into a prime (1115531341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 409824 + ... + 412536.

It is an arithmetic number, because the mean of its divisors is an integer number (20517840).

Almost surely, 2^1115531340 is an apocalyptic number.

1115531340 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 1115531340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969712640).

1115531340 is an abundant number, since it is smaller than the sum of its proper divisors (2823893940).

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

1115531340 is a wasteful number, since it uses less digits than its factorization.

1115531340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1115531340 is about 33399.5709553282. The cubic root of 1115531340 is about 1037.1158192420.

Adding to 1115531340 its reverse (431355111), we get a palindrome (1546886451).

The spelling of 1115531340 in words is "one billion, one hundred fifteen million, five hundred thirty-one thousand, three hundred forty".