316781438 has 16 divisors (see below), whose sum is σ = 501409440. Its totient is φ = 149799936.

The previous prime is 316781411. The next prime is 316781447. The reversal of 316781438 is 834187613.

316781438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×316781438² = 200700958922695688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 316781395 and 316781404.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34595 + ... + 42782.

It is an arithmetic number, because the mean of its divisors is an integer number (31338090).

Almost surely, 2^316781438 is an apocalyptic number.

316781438 is a deficient number, since it is larger than the sum of its proper divisors (184628002).

316781438 is a wasteful number, since it uses less digits than its factorization.

316781438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77491.

The product of its digits is 96768, while the sum is 41.

The square root of 316781438 is about 17798.3549239810. The cubic root of 316781438 is about 681.6894539349.

The spelling of 316781438 in words is "three hundred sixteen million, seven hundred eighty-one thousand, four hundred thirty-eight".