316646421 has 16 divisors (see below), whose sum is σ = 519625344. Its totient is φ = 167022144.

The previous prime is 316646387. The next prime is 316646441. The reversal of 316646421 is 124646613.

It is not a de Polignac number, because 316646421 - 2⁶ = 316646357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316646441) 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, 579666 + ... + 580211.

It is an arithmetic number, because the mean of its divisors is an integer number (32476584).

Almost surely, 2^316646421 is an apocalyptic number.

It is an amenable number.

316646421 is a deficient number, since it is larger than the sum of its proper divisors (202978923).

316646421 is a wasteful number, since it uses less digits than its factorization.

316646421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159900.

The product of its digits is 20736, while the sum is 33.

The square root of 316646421 is about 17794.5615568353. The cubic root of 316646421 is about 681.5925914157.

The spelling of 316646421 in words is "three hundred sixteen million, six hundred forty-six thousand, four hundred twenty-one".