312514393 has 2 divisors, whose sum is σ = 312514394. Its totient is φ = 312514392.

The previous prime is 312514373. The next prime is 312514481. The reversal of 312514393 is 393415213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246709849 + 65804544 = 15707^2 + 8112^2 .

It is a cyclic number.

It is not a de Polignac number, because 312514393 - 2²¹ = 310417241 is a prime.

It is not a weakly prime, because it can be changed into another prime (312514303) 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, 156257196 + 156257197.

It is an arithmetic number, because the mean of its divisors is an integer number (156257197).

Almost surely, 2^312514393 is an apocalyptic number.

It is an amenable number.

312514393 is a deficient number, since it is larger than the sum of its proper divisors (1).

312514393 is an equidigital number, since it uses as much as digits as its factorization.

312514393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 31.

The square root of 312514393 is about 17678.0766204924. The cubic root of 312514393 is about 678.6148222855.

The spelling of 312514393 in words is "three hundred twelve million, five hundred fourteen thousand, three hundred ninety-three".