313235287 has 2 divisors, whose sum is σ = 313235288. Its totient is φ = 313235286.

The previous prime is 313235281. The next prime is 313235339. The reversal of 313235287 is 782532313.

It is a weak prime.

It is an emirp because it is prime and its reverse (782532313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313235287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313235281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156617643 + 156617644.

It is an arithmetic number, because the mean of its divisors is an integer number (156617644).

Almost surely, 2^313235287 is an apocalyptic number.

313235287 is a deficient number, since it is larger than the sum of its proper divisors (1).

313235287 is an equidigital number, since it uses as much as digits as its factorization.

313235287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 313235287 is about 17698.4543675429. The cubic root of 313235287 is about 679.1362208557.

The spelling of 313235287 in words is "three hundred thirteen million, two hundred thirty-five thousand, two hundred eighty-seven".