213636226 has 4 divisors (see below), whose sum is σ = 320454342. Its totient is φ = 106818112.

The previous prime is 213636217. The next prime is 213636257. The reversal of 213636226 is 622636312.

It is a happy number.

213636226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 134444025 + 79192201 = 11595^2 + 8899^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53409055 + ... + 53409058.

Almost surely, 2^213636226 is an apocalyptic number.

213636226 is a deficient number, since it is larger than the sum of its proper divisors (106818116).

213636226 is a wasteful number, since it uses less digits than its factorization.

213636226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106818115.

The product of its digits is 15552, while the sum is 31.

The square root of 213636226 is about 14616.3000106046. The cubic root of 213636226 is about 597.8032876100.

The spelling of 213636226 in words is "two hundred thirteen million, six hundred thirty-six thousand, two hundred twenty-six".