213243020441 has 16 divisors (see below), whose sum is σ = 241181606400. Its totient is φ = 186784531200.

The previous prime is 213243020401. The next prime is 213243020447. The reversal of 213243020441 is 144020342312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213243020441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213243020441.

It is not an unprimeable number, because it can be changed into a prime (213243020447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287296 + ... + 1443473.

It is an arithmetic number, because the mean of its divisors is an integer number (15073850400).

Almost surely, 2^213243020441 is an apocalyptic number.

It is an amenable number.

213243020441 is a deficient number, since it is larger than the sum of its proper divisors (27938585959).

213243020441 is a wasteful number, since it uses less digits than its factorization.

213243020441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731040.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 213243020441 its reverse (144020342312), we get a palindrome (357263362753).

The spelling of 213243020441 in words is "two hundred thirteen billion, two hundred forty-three million, twenty thousand, four hundred forty-one".