316212730 has 16 divisors (see below), whose sum is σ = 584566920. Its totient is φ = 123066432.

The previous prime is 316212707. The next prime is 316212739. The reversal of 316212730 is 37212613.

It can be written as a sum of positive squares in 4 ways, for example, as 230705721 + 85507009 = 15189^2 + 9247^2 .

It is a super-3 number, since 3×316212730³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 316212695 and 316212704.

It is not an unprimeable number, because it can be changed into a prime (316212739) 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, 426945 + ... + 427684.

Almost surely, 2^316212730 is an apocalyptic number.

316212730 is a deficient number, since it is larger than the sum of its proper divisors (268354190).

316212730 is a wasteful number, since it uses less digits than its factorization.

316212730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854673.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 316212730 is about 17782.3713266819. The cubic root of 316212730 is about 681.2812708481.

The spelling of 316212730 in words is "three hundred sixteen million, two hundred twelve thousand, seven hundred thirty".