213438345 has 8 divisors (see below), whose sum is σ = 341501376. Its totient is φ = 113833776.

The previous prime is 213438331. The next prime is 213438353. The reversal of 213438345 is 543834312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213438345 - 2⁷ = 213438217 is a prime.

It is a Smith number, since the sum of its digits (33) 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 in 7 ways as a sum of consecutive naturals, for example, 7114597 + ... + 7114626.

It is an arithmetic number, because the mean of its divisors is an integer number (42687672).

Almost surely, 2^213438345 is an apocalyptic number.

It is an amenable number.

213438345 is a deficient number, since it is larger than the sum of its proper divisors (128063031).

213438345 is a wasteful number, since it uses less digits than its factorization.

213438345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229231.

The product of its digits is 34560, while the sum is 33.

The square root of 213438345 is about 14609.5292531964. The cubic root of 213438345 is about 597.6186584131.

The spelling of 213438345 in words is "two hundred thirteen million, four hundred thirty-eight thousand, three hundred forty-five".