313905047 has 4 divisors (see below), whose sum is σ = 317432160. Its totient is φ = 310377936.

The previous prime is 313905041. The next prime is 313905049. The reversal of 313905047 is 740509313.

It is a happy number.

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 313905047 - 2²⁰ = 312856471 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 (313905041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763423 + ... + 1763600.

It is an arithmetic number, because the mean of its divisors is an integer number (79358040).

Almost surely, 2^313905047 is an apocalyptic number.

313905047 is a deficient number, since it is larger than the sum of its proper divisors (3527113).

313905047 is an equidigital number, since it uses as much as digits as its factorization.

313905047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527112.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 313905047 is about 17717.3656901922. The cubic root of 313905047 is about 679.6199195171.

The spelling of 313905047 in words is "three hundred thirteen million, nine hundred five thousand, forty-seven".