1130531 has 4 divisors (see below), whose sum is σ = 1135464. Its totient is φ = 1125600.

The previous prime is 1130527. The next prime is 1130561. The reversal of 1130531 is 1350311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1350311 = 19 ⋅71069.

It is a cyclic number.

It is not a de Polignac number, because 1130531 - 2² = 1130527 is a prime.

It is a super-2 number, since 2×1130531² = 2556200683922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130501) 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, 2105 + ... + 2586.

It is an arithmetic number, because the mean of its divisors is an integer number (283866).

2^1130531 is an apocalyptic number.

1130531 is a deficient number, since it is larger than the sum of its proper divisors (4933).

1130531 is an equidigital number, since it uses as much as digits as its factorization.

1130531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 1130531 is about 1063.2643133295. The cubic root of 1130531 is about 104.1743561968.

Adding to 1130531 its reverse (1350311), we get a palindrome (2480842).

It can be divided in two parts, 1130 and 531, that added together give a palindrome (1661).

The spelling of 1130531 in words is "one million, one hundred thirty thousand, five hundred thirty-one".