1115232331 has 4 divisors (see below), whose sum is σ = 1115799552. Its totient is φ = 1114665112.

The previous prime is 1115232329. The next prime is 1115232361. The reversal of 1115232331 is 1332325111.

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 1115232331 - 2¹ = 1115232329 is a prime.

It is a super-2 number, since 2×1115232331² = 2487486304215387122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115232361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280651 + ... + 284596.

It is an arithmetic number, because the mean of its divisors is an integer number (278949888).

Almost surely, 2^1115232331 is an apocalyptic number.

1115232331 is a deficient number, since it is larger than the sum of its proper divisors (567221).

1115232331 is an equidigital number, since it uses as much as digits as its factorization.

1115232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567220.

The product of its digits is 540, while the sum is 22.

The square root of 1115232331 is about 33395.0944151982. The cubic root of 1115232331 is about 1037.0231475066.

Adding to 1115232331 its reverse (1332325111), we get a palindrome (2447557442).

The spelling of 1115232331 in words is "one billion, one hundred fifteen million, two hundred thirty-two thousand, three hundred thirty-one".