316021439 has 4 divisors (see below), whose sum is σ = 326918760. Its totient is φ = 305124120.

The previous prime is 316021427. The next prime is 316021463. The reversal of 316021439 is 934120613.

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 316021439 - 2⁴ = 316021423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 10897291 = 316021439 / (3 + 1 + 6 + 0 + 2 + 1 + 4 + 3 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316021499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5448617 + ... + 5448674.

It is an arithmetic number, because the mean of its divisors is an integer number (81729690).

Almost surely, 2^316021439 is an apocalyptic number.

316021439 is a deficient number, since it is larger than the sum of its proper divisors (10897321).

316021439 is a wasteful number, since it uses less digits than its factorization.

316021439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10897320.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 316021439 is about 17776.9918433913. The cubic root of 316021439 is about 681.1438641263.

The spelling of 316021439 in words is "three hundred sixteen million, twenty-one thousand, four hundred thirty-nine".