312343399 has 2 divisors, whose sum is σ = 312343400. Its totient is φ = 312343398.

The previous prime is 312343393. The next prime is 312343411. The reversal of 312343399 is 993343213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312343399 - 2³ = 312343391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312343391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156171699 + 156171700.

It is an arithmetic number, because the mean of its divisors is an integer number (156171700).

Almost surely, 2^312343399 is an apocalyptic number.

312343399 is a deficient number, since it is larger than the sum of its proper divisors (1).

312343399 is an equidigital number, since it uses as much as digits as its factorization.

312343399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 37.

The square root of 312343399 is about 17673.2396294511. The cubic root of 312343399 is about 678.4910304050.

The spelling of 312343399 in words is "three hundred twelve million, three hundred forty-three thousand, three hundred ninety-nine".