313706639 has 8 divisors (see below), whose sum is σ = 325510272. Its totient is φ = 302008320.

The previous prime is 313706581. The next prime is 313706647. The reversal of 313706639 is 936607313.

It is a happy number.

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-313706639 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 (313706669) 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, 20234 + ... + 32199.

It is an arithmetic number, because the mean of its divisors is an integer number (40688784).

Almost surely, 2^313706639 is an apocalyptic number.

313706639 is a deficient number, since it is larger than the sum of its proper divisors (11803633).

313706639 is a wasteful number, since it uses less digits than its factorization.

313706639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52657.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 313706639 is about 17711.7655528747. The cubic root of 313706639 is about 679.4767016344.

The spelling of 313706639 in words is "three hundred thirteen million, seven hundred six thousand, six hundred thirty-nine".