12031319 has 2 divisors, whose sum is σ = 12031320. Its totient is φ = 12031318.

The previous prime is 12031307. The next prime is 12031337. The reversal of 12031319 is 91313021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12031319 - 2²⁰ = 10982743 is a prime.

It is a super-2 number, since 2×12031319² = 289505273759522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12031319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015659 + 6015660.

It is an arithmetic number, because the mean of its divisors is an integer number (6015660).

Almost surely, 2^12031319 is an apocalyptic number.

12031319 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031319 is an equidigital number, since it uses as much as digits as its factorization.

12031319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12031319 is about 3468.6191777132. The cubic root of 12031319 is about 229.1418494044.

The spelling of 12031319 in words is "twelve million, thirty-one thousand, three hundred nineteen".