213403241 has 4 divisors (see below), whose sum is σ = 216588432. Its totient is φ = 210218052.

The previous prime is 213403217. The next prime is 213403243. The reversal of 213403241 is 142304312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213403241 - 2²⁶ = 146294377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213403243) 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 3 ways as a sum of consecutive naturals, for example, 1592495 + ... + 1592628.

It is an arithmetic number, because the mean of its divisors is an integer number (54147108).

Almost surely, 2^213403241 is an apocalyptic number.

It is an amenable number.

213403241 is a deficient number, since it is larger than the sum of its proper divisors (3185191).

213403241 is an equidigital number, since it uses as much as digits as its factorization.

213403241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185190.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 213403241 is about 14608.3277961579. The cubic root of 213403241 is about 597.5858933608.

Adding to 213403241 its reverse (142304312), we get a palindrome (355707553).

The spelling of 213403241 in words is "two hundred thirteen million, four hundred three thousand, two hundred forty-one".