213043541 has 8 divisors (see below), whose sum is σ = 233354520. Its totient is φ = 193596928.

The previous prime is 213043531. The next prime is 213043547. The reversal of 213043541 is 145340312.

213043541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14092516 + 198951025 = 3754^2 + 14105^2 .

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 213043541 - 2¹⁰ = 213042517 is a prime.

It is a super-3 number, since 3×213043541³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213043547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215576 + ... + 216561.

It is an arithmetic number, because the mean of its divisors is an integer number (29169315).

Almost surely, 2^213043541 is an apocalyptic number.

It is an amenable number.

213043541 is a deficient number, since it is larger than the sum of its proper divisors (20310979).

213043541 is a wasteful number, since it uses less digits than its factorization.

213043541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432183.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213043541 is about 14596.0111331829. The cubic root of 213043541 is about 597.2499526193.

Adding to 213043541 its reverse (145340312), we get a palindrome (358383853).

The spelling of 213043541 in words is "two hundred thirteen million, forty-three thousand, five hundred forty-one".