213484573 has 4 divisors (see below), whose sum is σ = 220846140. Its totient is φ = 206123008.

The previous prime is 213484571. The next prime is 213484577. The reversal of 213484573 is 375484312.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121286169 + 92198404 = 11013^2 + 9602^2 .

It is a cyclic number.

It is not a de Polignac number, because 213484573 - 2¹ = 213484571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213484571) 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 in 3 ways as a sum of consecutive naturals, for example, 3680740 + ... + 3680797.

It is an arithmetic number, because the mean of its divisors is an integer number (55211535).

Almost surely, 2^213484573 is an apocalyptic number.

It is an amenable number.

213484573 is a deficient number, since it is larger than the sum of its proper divisors (7361567).

213484573 is an equidigital number, since it uses as much as digits as its factorization.

213484573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361566.

The product of its digits is 80640, while the sum is 37.

The square root of 213484573 is about 14611.1112855936. Note that the first 3 decimals coincide. The cubic root of 213484573 is about 597.6618008032.

It can be divided in two parts, 21348 and 4573, that added together give a square (25921 = 161²).

The spelling of 213484573 in words is "two hundred thirteen million, four hundred eighty-four thousand, five hundred seventy-three".