312560243 has 2 divisors, whose sum is σ = 312560244. Its totient is φ = 312560242.

The previous prime is 312560233. The next prime is 312560251. The reversal of 312560243 is 342065213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312560243 - 2¹⁴ = 312543859 is a prime.

It is not a weakly prime, because it can be changed into another prime (312560233) 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, 156280121 + 156280122.

It is an arithmetic number, because the mean of its divisors is an integer number (156280122).

Almost surely, 2^312560243 is an apocalyptic number.

312560243 is a deficient number, since it is larger than the sum of its proper divisors (1).

312560243 is an equidigital number, since it uses as much as digits as its factorization.

312560243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 312560243 is about 17679.3733769045. The cubic root of 312560243 is about 678.6480079230.

The spelling of 312560243 in words is "three hundred twelve million, five hundred sixty thousand, two hundred forty-three".