11003043240 has 320 divisors, whose sum is σ = 42867221760. Its totient is φ = 2479196160.

The previous prime is 11003043197. The next prime is 11003043251. The reversal of 11003043240 is 4234030011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1606864 + ... + 1613696.

It is an arithmetic number, because the mean of its divisors is an integer number (133960068).

Almost surely, 2^11003043240 is an apocalyptic number.

11003043240 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 11003043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21433610880).

11003043240 is an abundant number, since it is smaller than the sum of its proper divisors (31864178520).

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

11003043240 is a wasteful number, since it uses less digits than its factorization.

11003043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934 (or 6921 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 11003043240 its reverse (4234030011), we get a palindrome (15237073251).

The spelling of 11003043240 in words is "eleven billion, three million, forty-three thousand, two hundred forty".