213233340403 has 4 divisors (see below), whose sum is σ = 220586214240. Its totient is φ = 205880466568.

The previous prime is 213233340349. The next prime is 213233340479. The reversal of 213233340403 is 304043332312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213233340403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213233340703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3676436875 + ... + 3676436932.

It is an arithmetic number, because the mean of its divisors is an integer number (55146553560).

Almost surely, 2^213233340403 is an apocalyptic number.

213233340403 is a deficient number, since it is larger than the sum of its proper divisors (7352873837).

213233340403 is an equidigital number, since it uses as much as digits as its factorization.

213233340403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352873836.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 213233340403 its reverse (304043332312), we get a palindrome (517276672715).

The spelling of 213233340403 in words is "two hundred thirteen billion, two hundred thirty-three million, three hundred forty thousand, four hundred three".