12136331 has 4 divisors (see below), whose sum is σ = 12200064. Its totient is φ = 12072600.

The previous prime is 12136321. The next prime is 12136361. The reversal of 12136331 is 13363121.

It is a happy number.

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 12136331 - 2¹⁰ = 12135307 is a prime.

It is a super-2 number, since 2×12136331² = 294581060283122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12136321) 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, 31580 + ... + 31961.

It is an arithmetic number, because the mean of its divisors is an integer number (3050016).

Almost surely, 2^12136331 is an apocalyptic number.

12136331 is a deficient number, since it is larger than the sum of its proper divisors (63733).

12136331 is an equidigital number, since it uses as much as digits as its factorization.

12136331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63732.

The product of its digits is 324, while the sum is 20.

The square root of 12136331 is about 3483.7237261298. The cubic root of 12136331 is about 229.8065859801.

Adding to 12136331 its reverse (13363121), we get a palindrome (25499452).

The spelling of 12136331 in words is "twelve million, one hundred thirty-six thousand, three hundred thirty-one".