213452443 has 4 divisors (see below), whose sum is σ = 222733008. Its totient is φ = 204171880.

The previous prime is 213452429. The next prime is 213452461. The reversal of 213452443 is 344254312.

It is a happy number.

213452443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213452443 - 2²⁵ = 179898011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213452423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640248 + ... + 4640293.

It is an arithmetic number, because the mean of its divisors is an integer number (55683252).

Almost surely, 2^213452443 is an apocalyptic number.

213452443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213452443 is a deficient number, since it is larger than the sum of its proper divisors (9280565).

213452443 is an equidigital number, since it uses as much as digits as its factorization.

213452443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280564.

The product of its digits is 11520, while the sum is 28.

The square root of 213452443 is about 14610.0117385305. The cubic root of 213452443 is about 597.6318160650.

The spelling of 213452443 in words is "two hundred thirteen million, four hundred fifty-two thousand, four hundred forty-three".