213532443 has 10 divisors (see below), whose sum is σ = 318980684. Its totient is φ = 142354908.

The previous prime is 213532441. The next prime is 213532457. The reversal of 213532443 is 344235312.

213532443 is a `hidden beast` number, since 213 + 5 + 3 + 2 + 443 = 666.

It is not a de Polignac number, because 213532443 - 2¹ = 213532441 is a prime.

It is a super-2 number, since 2×213532443² = 91192208427096498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213532441) 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 9 ways as a sum of consecutive naturals, for example, 1318021 + ... + 1318182.

Almost surely, 2^213532443 is an apocalyptic number.

213532443 is a deficient number, since it is larger than the sum of its proper divisors (105448241).

213532443 is an equidigital number, since it uses as much as digits as its factorization.

213532443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636215 (or 2636206 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 213532443 is about 14612.7493306359. The cubic root of 213532443 is about 597.7064690304.

Adding to 213532443 its reverse (344235312), we get a palindrome (557767755).

The spelling of 213532443 in words is "two hundred thirteen million, five hundred thirty-two thousand, four hundred forty-three".