213615316 has 12 divisors (see below), whose sum is σ = 375283188. Its totient is φ = 106391552.

The previous prime is 213615293. The next prime is 213615343. The reversal of 213615316 is 613516312.

213615316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 208686916 + 4928400 = 14446^2 + 2220^2 .

It is a super-3 number, since 3×213615316³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102871 + ... + 104926.

It is an arithmetic number, because the mean of its divisors is an integer number (31273599).

Almost surely, 2^213615316 is an apocalyptic number.

It is an amenable number.

213615316 is a deficient number, since it is larger than the sum of its proper divisors (161667872).

213615316 is a wasteful number, since it uses less digits than its factorization.

213615316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208058 (or 208056 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 213615316 is about 14615.5846957965. The cubic root of 213615316 is about 597.7837833108.

The spelling of 213615316 in words is "two hundred thirteen million, six hundred fifteen thousand, three hundred sixteen".