316240385 has 16 divisors (see below), whose sum is σ = 385572096. Its totient is φ = 248968128.

The previous prime is 316240373. The next prime is 316240387. The reversal of 316240385 is 583042613.

It is a cyclic number.

It is not a de Polignac number, because 316240385 - 2¹⁰ = 316239361 is a prime.

It is a super-2 number, since 2×316240385² = 200015962209896450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316240387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84167 + ... + 87843.

It is an arithmetic number, because the mean of its divisors is an integer number (24098256).

Almost surely, 2^316240385 is an apocalyptic number.

It is an amenable number.

316240385 is a deficient number, since it is larger than the sum of its proper divisors (69331711).

316240385 is a wasteful number, since it uses less digits than its factorization.

316240385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 316240385 is about 17783.1489056354. The cubic root of 316240385 is about 681.3011311958.

Adding to 316240385 its reverse (583042613), we get a palindrome (899282998).

The spelling of 316240385 in words is "three hundred sixteen million, two hundred forty thousand, three hundred eighty-five".