1111325287 has 4 divisors (see below), whose sum is σ = 1117143936. Its totient is φ = 1105506640.

The previous prime is 1111325279. The next prime is 1111325297. The reversal of 1111325287 is 7825231111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111325287 - 2³ = 1111325279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111325297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2909038 + ... + 2909419.

It is an arithmetic number, because the mean of its divisors is an integer number (279285984).

Almost surely, 2^1111325287 is an apocalyptic number.

1111325287 is a deficient number, since it is larger than the sum of its proper divisors (5818649).

1111325287 is an equidigital number, since it uses as much as digits as its factorization.

1111325287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818648.

The product of its digits is 3360, while the sum is 31.

The square root of 1111325287 is about 33336.5458168659. The cubic root of 1111325287 is about 1035.8107138042.

Adding to 1111325287 its reverse (7825231111), we get a palindrome (8936556398).

The spelling of 1111325287 in words is "one billion, one hundred eleven million, three hundred twenty-five thousand, two hundred eighty-seven".