313720647 has 16 divisors (see below), whose sum is σ = 450552960. Its totient is φ = 193529952.

The previous prime is 313720577. The next prime is 313720663. The reversal of 313720647 is 746027313.

It is not a de Polignac number, because 313720647 - 2²⁰ = 312672071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313725647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61548 + ... + 66449.

It is an arithmetic number, because the mean of its divisors is an integer number (28159560).

Almost surely, 2^313720647 is an apocalyptic number.

313720647 is a deficient number, since it is larger than the sum of its proper divisors (136832313).

313720647 is a wasteful number, since it uses less digits than its factorization.

313720647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128062.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 313720647 is about 17712.1609918158. The cubic root of 313720647 is about 679.4868150831.

The spelling of 313720647 in words is "three hundred thirteen million, seven hundred twenty thousand, six hundred forty-seven".