12031219 has 2 divisors, whose sum is σ = 12031220. Its totient is φ = 12031218.

The previous prime is 12031211. The next prime is 12031247. The reversal of 12031219 is 91213021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12031219 - 2³ = 12031211 is a prime.

It is a super-2 number, since 2×12031219² = 289500461251922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031196 and 12031205.

It is not a weakly prime, because it can be changed into another prime (12031211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015609 + 6015610.

It is an arithmetic number, because the mean of its divisors is an integer number (6015610).

Almost surely, 2^12031219 is an apocalyptic number.

12031219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031219 is an equidigital number, since it uses as much as digits as its factorization.

12031219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12031219 is about 3468.6047627252. The cubic root of 12031219 is about 229.1412145544.

The spelling of 12031219 in words is "twelve million, thirty-one thousand, two hundred nineteen".