1111323240 has 160 divisors (see below), whose sum is σ = 3788674560. Its totient is φ = 292118400.

The previous prime is 1111323229. The next prime is 1111323253. The reversal of 1111323240 is 423231111.

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 39 ways as a sum of consecutive naturals, for example, 227625 + ... + 232455.

It is an arithmetic number, because the mean of its divisors is an integer number (23679216).

Almost surely, 2^1111323240 is an apocalyptic number.

1111323240 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 1111323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894337280).

1111323240 is an abundant number, since it is smaller than the sum of its proper divisors (2677351320).

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

1111323240 is a wasteful number, since it uses less digits than its factorization.

1111323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925 (or 4912 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1111323240 is about 33336.5151148107. The cubic root of 1111323240 is about 1035.8100778350.

Adding to 1111323240 its reverse (423231111), we get a palindrome (1534554351).

The spelling of 1111323240 in words is "one billion, one hundred eleven million, three hundred twenty-three thousand, two hundred forty".