12235531 has 16 divisors (see below), whose sum is σ = 15383808. Its totient is φ = 9453600.

The previous prime is 12235511. The next prime is 12235543. The reversal of 12235531 is 13553221.

It is a cyclic number.

It is not a de Polignac number, because 12235531 - 2⁷ = 12235403 is a prime.

It is a super-2 number, since 2×12235531² = 299416437703922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12235511) 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 15 ways as a sum of consecutive naturals, for example, 9481 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (961488).

Almost surely, 2^12235531 is an apocalyptic number.

12235531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12235531 is a deficient number, since it is larger than the sum of its proper divisors (3148277).

12235531 is a wasteful number, since it uses less digits than its factorization.

12235531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 900, while the sum is 22.

The square root of 12235531 is about 3497.9323892837. The cubic root of 12235531 is about 230.4310191145.

Adding to 12235531 its reverse (13553221), we get a palindrome (25788752).

It can be divided in two parts, 122 and 35531, that added together give a palindrome (35653).

The spelling of 12235531 in words is "twelve million, two hundred thirty-five thousand, five hundred thirty-one".