213043404321 has 24 divisors (see below), whose sum is σ = 336981243456. Its totient is φ = 128626259040.

The previous prime is 213043404319. The next prime is 213043404341. The reversal of 213043404321 is 123404340312.

213043404321 is a `hidden beast` number, since 2 + 1 + 304 + 34 + 0 + 4 + 321 = 666.

It is not a de Polignac number, because 213043404321 - 2¹ = 213043404319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213043404341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4065130 + ... + 4117203.

It is an arithmetic number, because the mean of its divisors is an integer number (14040885144).

Almost surely, 2^213043404321 is an apocalyptic number.

It is an amenable number.

213043404321 is a deficient number, since it is larger than the sum of its proper divisors (123937839135).

213043404321 is a wasteful number, since it uses less digits than its factorization.

213043404321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182613 (or 8182610 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 213043404321 its reverse (123404340312), we get a palindrome (336447744633).

The spelling of 213043404321 in words is "two hundred thirteen billion, forty-three million, four hundred four thousand, three hundred twenty-one".