312419279 has 2 divisors, whose sum is σ = 312419280. Its totient is φ = 312419278.

The previous prime is 312419267. The next prime is 312419309. The reversal of 312419279 is 972914213.

It is a weak prime.

It is an emirp because it is prime and its reverse (972914213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312419279 - 2¹² = 312415183 is a prime.

It is a Sophie Germain prime.

It is equal to p_16888160 and since 312419279 and 16888160 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312419579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156209639 + 156209640.

It is an arithmetic number, because the mean of its divisors is an integer number (156209640).

Almost surely, 2^312419279 is an apocalyptic number.

312419279 is a deficient number, since it is larger than the sum of its proper divisors (1).

312419279 is an equidigital number, since it uses as much as digits as its factorization.

312419279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 312419279 is about 17675.3862475477. The cubic root of 312419279 is about 678.5459696492.

The spelling of 312419279 in words is "three hundred twelve million, four hundred nineteen thousand, two hundred seventy-nine".