312542387 has 2 divisors, whose sum is σ = 312542388. Its totient is φ = 312542386.

The previous prime is 312542359. The next prime is 312542443. The reversal of 312542387 is 783245213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312542387 - 2⁶ = 312542323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312542327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156271193 + 156271194.

It is an arithmetic number, because the mean of its divisors is an integer number (156271194).

Almost surely, 2^312542387 is an apocalyptic number.

312542387 is a deficient number, since it is larger than the sum of its proper divisors (1).

312542387 is an equidigital number, since it uses as much as digits as its factorization.

312542387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 312542387 is about 17678.8683744181. The cubic root of 312542387 is about 678.6350843668.

The spelling of 312542387 in words is "three hundred twelve million, five hundred forty-two thousand, three hundred eighty-seven".