12031619 has 2 divisors, whose sum is σ = 12031620. Its totient is φ = 12031618.

The previous prime is 12031603. The next prime is 12031633. The reversal of 12031619 is 91613021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91613021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12031619 - 2⁴ = 12031603 is a prime.

It is a super-2 number, since 2×12031619² = 289519711522322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031594 and 12031603.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015809 + 6015810.

It is an arithmetic number, because the mean of its divisors is an integer number (6015810).

Almost surely, 2^12031619 is an apocalyptic number.

12031619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031619 is an equidigital number, since it uses as much as digits as its factorization.

12031619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12031619 is about 3468.6624223179. The cubic root of 12031619 is about 229.1437539333.

The spelling of 12031619 in words is "twelve million, thirty-one thousand, six hundred nineteen".