316438387 has 4 divisors (see below), whose sum is σ = 321161416. Its totient is φ = 311715360.

The previous prime is 316438373. The next prime is 316438399. The reversal of 316438387 is 783834613.

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 316438387 - 2¹¹ = 316436339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316438337) 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, 2361414 + ... + 2361547.

It is an arithmetic number, because the mean of its divisors is an integer number (80290354).

Almost surely, 2^316438387 is an apocalyptic number.

316438387 is a deficient number, since it is larger than the sum of its proper divisors (4723029).

316438387 is an equidigital number, since it uses as much as digits as its factorization.

316438387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723028.

The product of its digits is 290304, while the sum is 43.

The square root of 316438387 is about 17788.7151587741. The cubic root of 316438387 is about 681.4432918735.

The spelling of 316438387 in words is "three hundred sixteen million, four hundred thirty-eight thousand, three hundred eighty-seven".