1115631 has 24 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 661200.

The previous prime is 1115627. The next prime is 1115633. The reversal of 1115631 is 1365111.

It is not a de Polignac number, because 1115631 - 2² = 1115627 is a prime.

It is a super-2 number, since 2×1115631² = 2489265056322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5746 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2^1115631 is an apocalyptic number.

1115631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1115631 is a deficient number, since it is larger than the sum of its proper divisors (681489).

1115631 is a wasteful number, since it uses less digits than its factorization.

1115631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 264 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 1115631 is about 1056.2343489965. The cubic root of 1115631 is about 103.7146703145.

The spelling of 1115631 in words is "one million, one hundred fifteen thousand, six hundred thirty-one".