12233531 has 4 divisors (see below), whose sum is σ = 12243552. Its totient is φ = 12223512.

The previous prime is 12233527. The next prime is 12233537. The reversal of 12233531 is 13533221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12233531 - 2² = 12233527 is a prime.

It is a super-2 number, since 2×12233531² = 299318561455922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12233537) 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, 2876 + ... + 5721.

It is an arithmetic number, because the mean of its divisors is an integer number (3060888).

Almost surely, 2^12233531 is an apocalyptic number.

12233531 is a deficient number, since it is larger than the sum of its proper divisors (10021).

12233531 is an equidigital number, since it uses as much as digits as its factorization.

12233531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020.

The product of its digits is 540, while the sum is 20.

The square root of 12233531 is about 3497.6464944302. The cubic root of 12233531 is about 230.4184631371.

Adding to 12233531 its reverse (13533221), we get a palindrome (25766752).

The spelling of 12233531 in words is "twelve million, two hundred thirty-three thousand, five hundred thirty-one".