1113231 has 12 divisors (see below), whose sum is σ = 1726872. Its totient is φ = 636048.

The previous prime is 1113221. The next prime is 1113239. The reversal of 1113231 is 1323111.

It is not a de Polignac number, because 1113231 - 2⁵ = 1113199 is a prime.

It is a super-2 number, since 2×1113231² = 2478566518722, which contains 22 as substring.

1113231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113239) 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, 3640 + ... + 3933.

It is an arithmetic number, because the mean of its divisors is an integer number (143906).

2^1113231 is an apocalyptic number.

1113231 is a deficient number, since it is larger than the sum of its proper divisors (613641).

1113231 is an equidigital number, since it uses as much as digits as its factorization.

1113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590 (or 7583 counting only the distinct ones).

The product of its digits is 18, while the sum is 12.

The square root of 1113231 is about 1055.0976258148. The cubic root of 1113231 is about 103.6402448951.

Adding to 1113231 its reverse (1323111), we get a palindrome (2436342).

It can be divided in two parts, 11 and 13231, that multiplied together give a palindrome (145541).

The spelling of 1113231 in words is "one million, one hundred thirteen thousand, two hundred thirty-one".