11230531 has 4 divisors (see below), whose sum is σ = 12094432. Its totient is φ = 10366632.

The previous prime is 11230529. The next prime is 11230543. The reversal of 11230531 is 13503211.

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 11230531 - 2¹ = 11230529 is a prime.

It is a super-2 number, since 2×11230531² = 252249653083922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11230031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431931 + ... + 431956.

It is an arithmetic number, because the mean of its divisors is an integer number (3023608).

Almost surely, 2^11230531 is an apocalyptic number.

11230531 is a deficient number, since it is larger than the sum of its proper divisors (863901).

11230531 is an equidigital number, since it uses as much as digits as its factorization.

11230531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863900.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11230531 is about 3351.1984423486. The cubic root of 11230531 is about 223.9409057019.

Adding to 11230531 its reverse (13503211), we get a palindrome (24733742).

The spelling of 11230531 in words is "eleven million, two hundred thirty thousand, five hundred thirty-one".