213521314 has 4 divisors (see below), whose sum is σ = 320281974. Its totient is φ = 106760656.

The previous prime is 213521303. The next prime is 213521323. The reversal of 213521314 is 413125312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 204004089 + 9517225 = 14283^2 + 3085^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53380327 + ... + 53380330.

Almost surely, 2^213521314 is an apocalyptic number.

213521314 is a deficient number, since it is larger than the sum of its proper divisors (106760660).

213521314 is a wasteful number, since it uses less digits than its factorization.

213521314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106760659.

The product of its digits is 720, while the sum is 22.

The square root of 213521314 is about 14612.3685280655. The cubic root of 213521314 is about 597.6960849864.

Adding to 213521314 its reverse (413125312), we get a palindrome (626646626).

The spelling of 213521314 in words is "two hundred thirteen million, five hundred twenty-one thousand, three hundred fourteen".