316287393 has 16 divisors (see below), whose sum is σ = 431397120. Its totient is φ = 206032896.

The previous prime is 316287373. The next prime is 316287401. The reversal of 316287393 is 393782613.

It is a happy number.

It is not a de Polignac number, because 316287393 - 2²⁰ = 315238817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (316287373) 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 15 ways as a sum of consecutive naturals, for example, 106971 + ... + 109887.

It is an arithmetic number, because the mean of its divisors is an integer number (26962320).

Almost surely, 2^316287393 is an apocalyptic number.

It is an amenable number.

316287393 is a deficient number, since it is larger than the sum of its proper divisors (115109727).

316287393 is a wasteful number, since it uses less digits than its factorization.

316287393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736.

The product of its digits is 163296, while the sum is 42.

The square root of 316287393 is about 17784.4705572024. The cubic root of 316287393 is about 681.3348871805.

The spelling of 316287393 in words is "three hundred sixteen million, two hundred eighty-seven thousand, three hundred ninety-three".