213115312 has 10 divisors (see below), whose sum is σ = 412910948. Its totient is φ = 106557648.

The previous prime is 213115307. The next prime is 213115319. The reversal of 213115312 is 213511312.

213115312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213115312.

It is not an unprimeable number, because it can be changed into a prime (213115319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6659838 + ... + 6659869.

Almost surely, 2^213115312 is an apocalyptic number.

It is an amenable number.

213115312 is a deficient number, since it is larger than the sum of its proper divisors (199795636).

213115312 is a wasteful number, since it uses less digits than its factorization.

213115312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13319715 (or 13319709 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 213115312 is about 14598.4695088218. The cubic root of 213115312 is about 597.3170131108.

Adding to 213115312 its reverse (213511312), we get a palindrome (426626624).

The spelling of 213115312 in words is "two hundred thirteen million, one hundred fifteen thousand, three hundred twelve".