20316312 has 32 divisors (see below), whose sum is σ = 56434800. Its totient is φ = 6772032.

The previous prime is 20316277. The next prime is 20316313. The reversal of 20316312 is 21361302.

20316312 is a `hidden beast` number, since 2 + 0 + 31 + 631 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46813 + ... + 47244.

Almost surely, 2^20316312 is an apocalyptic number.

It is an amenable number.

20316312 is an abundant number, since it is smaller than the sum of its proper divisors (36118488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20316312 is a wasteful number, since it uses less digits than its factorization.

20316312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94072 (or 94062 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 20316312 is about 4507.3619779201. The cubic root of 20316312 is about 272.8652879630.

Adding to 20316312 its reverse (21361302), we get a palindrome (41677614).

The spelling of 20316312 in words is "twenty million, three hundred sixteen thousand, three hundred twelve".