287949313 has 8 divisors (see below), whose sum is σ = 304010720. Its totient is φ = 271978560.

The previous prime is 287949289. The next prime is 287949353. The reversal of 287949313 is 313949782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287949313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287949353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16083 + ... + 28888.

It is an arithmetic number, because the mean of its divisors is an integer number (38001340).

Almost surely, 2^287949313 is an apocalyptic number.

It is an amenable number.

287949313 is a deficient number, since it is larger than the sum of its proper divisors (16061407).

287949313 is a wasteful number, since it uses less digits than its factorization.

287949313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45327.

The product of its digits is 326592, while the sum is 46.

The square root of 287949313 is about 16969.0693027048. The cubic root of 287949313 is about 660.3467056572.

The spelling of 287949313 in words is "two hundred eighty-seven million, nine hundred forty-nine thousand, three hundred thirteen".