213820258 has 4 divisors (see below), whose sum is σ = 320730390. Its totient is φ = 106910128.

The previous prime is 213820247. The next prime is 213820267. The reversal of 213820258 is 852028312.

213820258 is digitally balanced in base 3, 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., 187060329 + 26759929 = 13677^2 + 5173^2 .

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, 53455063 + ... + 53455066.

Almost surely, 2^213820258 is an apocalyptic number.

213820258 is a deficient number, since it is larger than the sum of its proper divisors (106910132).

213820258 is a wasteful number, since it uses less digits than its factorization.

213820258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106910131.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 213820258 is about 14622.5940927046. The cubic root of 213820258 is about 597.9748929627.

The spelling of 213820258 in words is "two hundred thirteen million, eight hundred twenty thousand, two hundred fifty-eight".