213135316 has 6 divisors (see below), whose sum is σ = 372986810. Its totient is φ = 106567656.

The previous prime is 213135301. The next prime is 213135353. The reversal of 213135316 is 613531312.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 65610000 = 12146^2 + 8100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26641911 + ... + 26641918.

Almost surely, 2^213135316 is an apocalyptic number.

It is an amenable number.

213135316 is a deficient number, since it is larger than the sum of its proper divisors (159851494).

213135316 is a wasteful number, since it uses less digits than its factorization.

213135316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53283833 (or 53283831 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 213135316 is about 14599.1546330601. The cubic root of 213135316 is about 597.3357015157.

Adding to 213135316 its reverse (613531312), we get a palindrome (826666628).

The spelling of 213135316 in words is "two hundred thirteen million, one hundred thirty-five thousand, three hundred sixteen".