313949287 has 4 divisors (see below), whose sum is σ = 327599280. Its totient is φ = 300299296.

The previous prime is 313949267. The next prime is 313949297. The reversal of 313949287 is 782949313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313949287 - 2¹¹ = 313947239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313949257) 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 in 3 ways as a sum of consecutive naturals, for example, 6824962 + ... + 6825007.

It is an arithmetic number, because the mean of its divisors is an integer number (81899820).

Almost surely, 2^313949287 is an apocalyptic number.

313949287 is a deficient number, since it is larger than the sum of its proper divisors (13649993).

313949287 is a wasteful number, since it uses less digits than its factorization.

313949287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13649992.

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

The square root of 313949287 is about 17718.6141388089. The cubic root of 313949287 is about 679.6518452785.

The spelling of 313949287 in words is "three hundred thirteen million, nine hundred forty-nine thousand, two hundred eighty-seven".