12319777 has 2 divisors, whose sum is σ = 12319778. Its totient is φ = 12319776.

The previous prime is 12319763. The next prime is 12319787. The reversal of 12319777 is 77791321.

12319777 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10784656 + 1535121 = 3284^2 + 1239^2 .

It is an emirp because it is prime and its reverse (77791321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12319777 - 2⁷ = 12319649 is a prime.

It is not a weakly prime, because it can be changed into another prime (12319717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159888 + 6159889.

It is an arithmetic number, because the mean of its divisors is an integer number (6159889).

Almost surely, 2^12319777 is an apocalyptic number.

It is an amenable number.

12319777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12319777 is an equidigital number, since it uses as much as digits as its factorization.

12319777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 37.

The square root of 12319777 is about 3509.9539883024. The cubic root of 12319777 is about 230.9586765408.

It can be divided in two parts, 123 and 19777, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 12319777 in words is "twelve million, three hundred nineteen thousand, seven hundred seventy-seven".