213453206 has 4 divisors (see below), whose sum is σ = 320179812. Its totient is φ = 106726602.

The previous prime is 213453203. The next prime is 213453211. The reversal of 213453206 is 602354312.

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

It is a super-3 number, since 3×213453206³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213453203) by changing a digit.

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, 53363300 + ... + 53363303.

It is an arithmetic number, because the mean of its divisors is an integer number (80044953).

Almost surely, 2^213453206 is an apocalyptic number.

213453206 is a deficient number, since it is larger than the sum of its proper divisors (106726606).

213453206 is a wasteful number, since it uses less digits than its factorization.

213453206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106726605.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 213453206 is about 14610.0378507381. The cubic root of 213453206 is about 597.6325281558.

The spelling of 213453206 in words is "two hundred thirteen million, four hundred fifty-three thousand, two hundred six".