213423441 has 32 divisors (see below), whose sum is σ = 367027200. Its totient is φ = 107042880.

The previous prime is 213423407. The next prime is 213423443. The reversal of 213423441 is 144324312.

It is not a de Polignac number, because 213423441 - 2⁹ = 213422929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213423443) 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 31 ways as a sum of consecutive naturals, for example, 9231 + ... + 22628.

It is an arithmetic number, because the mean of its divisors is an integer number (11469600).

Almost surely, 2^213423441 is an apocalyptic number.

213423441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213423441 is a deficient number, since it is larger than the sum of its proper divisors (153603759).

213423441 is a wasteful number, since it uses less digits than its factorization.

213423441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31909.

The product of its digits is 2304, while the sum is 24.

The square root of 213423441 is about 14609.0191662548. The cubic root of 213423441 is about 597.6047478920.

Adding to 213423441 its reverse (144324312), we get a palindrome (357747753).

The spelling of 213423441 in words is "two hundred thirteen million, four hundred twenty-three thousand, four hundred forty-one".