1115040231 has 12 divisors (see below), whose sum is σ = 1611117352. Its totient is φ = 743127696.

The previous prime is 1115040203. The next prime is 1115040247. The reversal of 1115040231 is 1320405111.

It is not a de Polignac number, because 1115040231 - 2¹⁰ = 1115039207 is a prime.

It is a super-2 number, since 2×1115040231² = 2486629433497066722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115041231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14040 + ... + 49266.

Almost surely, 2^1115040231 is an apocalyptic number.

1115040231 is a deficient number, since it is larger than the sum of its proper divisors (496077121).

1115040231 is a wasteful number, since it uses less digits than its factorization.

1115040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38750 (or 38747 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1115040231 is about 33392.2181203945. The cubic root of 1115040231 is about 1036.9636012936.

Adding to 1115040231 its reverse (1320405111), we get a palindrome (2435445342).

It can be divided in two parts, 1115040 and 231, that added together give a triangular number (1115271 = T₁₄₉₃).

The spelling of 1115040231 in words is "one billion, one hundred fifteen million, forty thousand, two hundred thirty-one".