1118031 has 4 divisors (see below), whose sum is σ = 1490712. Its totient is φ = 745352.

The previous prime is 1118027. The next prime is 1118041. The reversal of 1118031 is 1308111.

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 1118031 - 2² = 1118027 is a prime.

It is a super-2 number, since 2×1118031² = 2499986633922, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118011) 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 3 ways as a sum of consecutive naturals, for example, 186336 + ... + 186341.

It is an arithmetic number, because the mean of its divisors is an integer number (372678).

2^1118031 is an apocalyptic number.

1118031 is a deficient number, since it is larger than the sum of its proper divisors (372681).

1118031 is an equidigital number, since it uses as much as digits as its factorization.

1118031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372680.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1118031 is about 1057.3698501471. The cubic root of 1118031 is about 103.7889890719.

It can be divided in two parts, 11180 and 31, that added together give a palindrome (11211).

The spelling of 1118031 in words is "one million, one hundred eighteen thousand, thirty-one".