287495313 has 16 divisors (see below), whose sum is σ = 463858560. Its totient is φ = 154619136.

The previous prime is 287495311. The next prime is 287495323. The reversal of 287495313 is 313594782.

It is not a de Polignac number, because 287495313 - 2¹ = 287495311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287495311) 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 in 15 ways as a sum of consecutive naturals, for example, 402298 + ... + 403011.

It is an arithmetic number, because the mean of its divisors is an integer number (28991160).

Almost surely, 2^287495313 is an apocalyptic number.

It is an amenable number.

287495313 is a deficient number, since it is larger than the sum of its proper divisors (176363247).

287495313 is a wasteful number, since it uses less digits than its factorization.

287495313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805336.

The product of its digits is 181440, while the sum is 42.

The square root of 287495313 is about 16955.6867451602. The cubic root of 287495313 is about 659.9994742879. Note that the first 3 decimals are identical.

The spelling of 287495313 in words is "two hundred eighty-seven million, four hundred ninety-five thousand, three hundred thirteen".