213524243 has 8 divisors (see below), whose sum is σ = 221325312. Its totient is φ = 205859016.

The previous prime is 213524231. The next prime is 213524251. The reversal of 213524243 is 342425312.

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 213524243 - 2⁸ = 213523987 is a prime.

It is a super-3 number, since 3×213524243³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213524293) 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, 30755 + ... + 37052.

It is an arithmetic number, because the mean of its divisors is an integer number (27665664).

Almost surely, 2^213524243 is an apocalyptic number.

213524243 is a deficient number, since it is larger than the sum of its proper divisors (7801069).

213524243 is an equidigital number, since it uses as much as digits as its factorization.

213524243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67921.

The product of its digits is 5760, while the sum is 26.

The square root of 213524243 is about 14612.4687510359. The cubic root of 213524243 is about 597.6988179592.

Adding to 213524243 its reverse (342425312), we get a palindrome (555949555).

The spelling of 213524243 in words is "two hundred thirteen million, five hundred twenty-four thousand, two hundred forty-three".