11531456 has 14 divisors (see below), whose sum is σ = 22882860. Its totient is φ = 5765696.

The previous prime is 11531449. The next prime is 11531459. The reversal of 11531456 is 65413511.

It is not an unprimeable number, because it can be changed into a prime (11531459) 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 as a sum of consecutive naturals, namely, 90026 + ... + 90153.

It is an arithmetic number, because the mean of its divisors is an integer number (1634490).

Almost surely, 2^11531456 is an apocalyptic number.

11531456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11531456 is a deficient number, since it is larger than the sum of its proper divisors (11351404).

11531456 is an equidigital number, since it uses as much as digits as its factorization.

11531456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180191 (or 180181 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 11531456 is about 3395.7997585252. The cubic root of 11531456 is about 225.9234867730.

Adding to 11531456 its reverse (65413511), we get a palindrome (76944967).

The spelling of 11531456 in words is "eleven million, five hundred thirty-one thousand, four hundred fifty-six".