316439391 has 16 divisors (see below), whose sum is σ = 437971968. Its totient is φ = 203080800.

The previous prime is 316439369. The next prime is 316439393. The reversal of 316439391 is 193934613.

It is not a de Polignac number, because 316439391 - 2¹⁷ = 316308319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316439393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9795 + ... + 26996.

It is an arithmetic number, because the mean of its divisors is an integer number (27373248).

Almost surely, 2^316439391 is an apocalyptic number.

316439391 is a deficient number, since it is larger than the sum of its proper divisors (121532577).

316439391 is a wasteful number, since it uses less digits than its factorization.

316439391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36902.

The product of its digits is 52488, while the sum is 39.

The square root of 316439391 is about 17788.7433788899. The cubic root of 316439391 is about 681.4440125703. Note that the first 3 decimals are identical.

The spelling of 316439391 in words is "three hundred sixteen million, four hundred thirty-nine thousand, three hundred ninety-one".