1115253331 has 4 divisors (see below), whose sum is σ = 1116602712. Its totient is φ = 1113903952.

The previous prime is 1115253311. The next prime is 1115253343. The reversal of 1115253331 is 1333525111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115253331 is a prime.

It is a super-2 number, since 2×1115253331² = 2487579984613191122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115253296 and 1115253305.

It is not an unprimeable number, because it can be changed into a prime (1115253311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673450 + ... + 675103.

It is an arithmetic number, because the mean of its divisors is an integer number (279150678).

Almost surely, 2^1115253331 is an apocalyptic number.

1115253331 is a deficient number, since it is larger than the sum of its proper divisors (1349381).

1115253331 is an equidigital number, since it uses as much as digits as its factorization.

1115253331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349380.

The product of its digits is 1350, while the sum is 25.

The square root of 1115253331 is about 33395.4088311552. The cubic root of 1115253331 is about 1037.0296565687.

Adding to 1115253331 its reverse (1333525111), we get a palindrome (2448778442).

The spelling of 1115253331 in words is "one billion, one hundred fifteen million, two hundred fifty-three thousand, three hundred thirty-one".