312315427 has 2 divisors, whose sum is σ = 312315428. Its totient is φ = 312315426.

The previous prime is 312315403. The next prime is 312315431. The reversal of 312315427 is 724513213.

It is a strong prime.

It is an emirp because it is prime and its reverse (724513213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312315427 - 2⁷ = 312315299 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 312315395 and 312315404.

It is not a weakly prime, because it can be changed into another prime (312315457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156157713 + 156157714.

It is an arithmetic number, because the mean of its divisors is an integer number (156157714).

Almost surely, 2^312315427 is an apocalyptic number.

312315427 is a deficient number, since it is larger than the sum of its proper divisors (1).

312315427 is an equidigital number, since it uses as much as digits as its factorization.

312315427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 312315427 is about 17672.4482457864. The cubic root of 312315427 is about 678.4707756494.

The spelling of 312315427 in words is "three hundred twelve million, three hundred fifteen thousand, four hundred twenty-seven".