1115124331 has 4 divisors (see below), whose sum is σ = 1115191432. Its totient is φ = 1115057232.

The previous prime is 1115124317. The next prime is 1115124337. The reversal of 1115124331 is 1334215111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1334215111 = 2269 ⋅588019.

It is a cyclic number.

It is not a de Polignac number, because 1115124331 - 2¹⁹ = 1114600043 is a prime.

It is a super-2 number, since 2×1115124331² = 2487004547176395122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115124337) 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, 11920 + ... + 48706.

It is an arithmetic number, because the mean of its divisors is an integer number (278797858).

Almost surely, 2^1115124331 is an apocalyptic number.

1115124331 is a deficient number, since it is larger than the sum of its proper divisors (67101).

1115124331 is an equidigital number, since it uses as much as digits as its factorization.

1115124331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67100.

The product of its digits is 360, while the sum is 22.

The square root of 1115124331 is about 33393.4773720857. The cubic root of 1115124331 is about 1036.9896710395.

Adding to 1115124331 its reverse (1334215111), we get a palindrome (2449339442).

The spelling of 1115124331 in words is "one billion, one hundred fifteen million, one hundred twenty-four thousand, three hundred thirty-one".