12016331 has 6 divisors (see below), whose sum is σ = 12765060. Its totient is φ = 11309216.

The previous prime is 12016283. The next prime is 12016337. The reversal of 12016331 is 13361021.

It is not a de Polignac number, because 12016331 - 2⁶ = 12016267 is a prime.

It is a super-2 number, since 2×12016331² = 288784421403122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12016337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20501 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (2127510).

Almost surely, 2^12016331 is an apocalyptic number.

12016331 is a deficient number, since it is larger than the sum of its proper divisors (748729).

12016331 is an equidigital number, since it uses as much as digits as its factorization.

12016331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41613 (or 41596 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12016331 is about 3466.4579905142. The cubic root of 12016331 is about 229.0466588119.

Adding to 12016331 its reverse (13361021), we get a palindrome (25377352).

The spelling of 12016331 in words is "twelve million, sixteen thousand, three hundred thirty-one".