213622473 has 8 divisors (see below), whose sum is σ = 290890368. Its totient is φ = 139384784.

The previous prime is 213622429. The next prime is 213622477. The reversal of 213622473 is 374226312.

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

It is a cyclic number.

It is not a de Polignac number, because 213622473 - 2⁸ = 213622217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213622473.

It is not an unprimeable number, because it can be changed into a prime (213622477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757386 + ... + 757667.

It is an arithmetic number, because the mean of its divisors is an integer number (36361296).

Almost surely, 2^213622473 is an apocalyptic number.

It is an amenable number.

213622473 is a deficient number, since it is larger than the sum of its proper divisors (77267895).

213622473 is a wasteful number, since it uses less digits than its factorization.

213622473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515103.

The product of its digits is 12096, while the sum is 30.

The square root of 213622473 is about 14615.8295351307. The cubic root of 213622473 is about 597.7904593158.

Adding to 213622473 its reverse (374226312), we get a palindrome (587848785).

The spelling of 213622473 in words is "two hundred thirteen million, six hundred twenty-two thousand, four hundred seventy-three".