213452266 has 4 divisors (see below), whose sum is σ = 320178402. Its totient is φ = 106726132.

The previous prime is 213452263. The next prime is 213452279. The reversal of 213452266 is 662254312.

213452266 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., 123676641 + 89775625 = 11121^2 + 9475^2 .

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 not an unprimeable number, because it can be changed into a prime (213452263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53363065 + ... + 53363068.

Almost surely, 2^213452266 is an apocalyptic number.

213452266 is a deficient number, since it is larger than the sum of its proper divisors (106726136).

213452266 is a wasteful number, since it uses less digits than its factorization.

213452266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106726135.

The product of its digits is 17280, while the sum is 31.

The square root of 213452266 is about 14610.0056810393. The cubic root of 213452266 is about 597.6316508746.

The spelling of 213452266 in words is "two hundred thirteen million, four hundred fifty-two thousand, two hundred sixty-six".