213329445 has 32 divisors (see below), whose sum is σ = 402677760. Its totient is φ = 94374720.

The previous prime is 213329443. The next prime is 213329471. The reversal of 213329445 is 544923312.

213329445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213329445 - 2¹ = 213329443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213329443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29515 + ... + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (12583680).

Almost surely, 2^213329445 is an apocalyptic number.

It is an amenable number.

213329445 is a deficient number, since it is larger than the sum of its proper divisors (189348315).

213329445 is a wasteful number, since it uses less digits than its factorization.

213329445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65585.

The product of its digits is 25920, while the sum is 33.

The square root of 213329445 is about 14605.8017582055. The cubic root of 213329445 is about 597.5170026032.

The spelling of 213329445 in words is "two hundred thirteen million, three hundred twenty-nine thousand, four hundred forty-five".