1130231 has 4 divisors (see below), whose sum is σ = 1135200. Its totient is φ = 1125264.

The previous prime is 1130191. The next prime is 1130237. The reversal of 1130231 is 1320311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320311 = 743 ⋅1777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130231 is a prime.

It is a super-2 number, since 2×1130231² = 2554844226722, 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 (1130237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 2603.

It is an arithmetic number, because the mean of its divisors is an integer number (283800).

2^1130231 is an apocalyptic number.

1130231 is a deficient number, since it is larger than the sum of its proper divisors (4969).

1130231 is an equidigital number, since it uses as much as digits as its factorization.

1130231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1130231 is about 1063.1232289815. The cubic root of 1130231 is about 104.1651407421.

Adding to 1130231 its reverse (1320311), we get a palindrome (2450542).

The spelling of 1130231 in words is "one million, one hundred thirty thousand, two hundred thirty-one".