316342393 has 4 divisors (see below), whose sum is σ = 316421028. Its totient is φ = 316263760.

The previous prime is 316342387. The next prime is 316342421. The reversal of 316342393 is 393243613.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82955664 + 233386729 = 9108^2 + 15277^2 .

It is a cyclic number.

It is not a de Polignac number, because 316342393 - 2⁹ = 316341881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316342333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32938 + ... + 41443.

It is an arithmetic number, because the mean of its divisors is an integer number (79105257).

Almost surely, 2^316342393 is an apocalyptic number.

It is an amenable number.

316342393 is a deficient number, since it is larger than the sum of its proper divisors (78635).

316342393 is an equidigital number, since it uses as much as digits as its factorization.

316342393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78634.

The product of its digits is 34992, while the sum is 34.

The square root of 316342393 is about 17786.0167828550. The cubic root of 316342393 is about 681.3743778966.

The spelling of 316342393 in words is "three hundred sixteen million, three hundred forty-two thousand, three hundred ninety-three".