203454320213 has 16 divisors (see below), whose sum is σ = 220702527360. Its totient is φ = 186793920000.

The previous prime is 203454320191. The next prime is 203454320219. The reversal of 203454320213 is 312023454302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203454320213 - 2⁶ = 203454320149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203454320219) 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, 10291088 + ... + 10310838.

It is an arithmetic number, because the mean of its divisors is an integer number (13793907960).

Almost surely, 2^203454320213 is an apocalyptic number.

It is an amenable number.

203454320213 is a deficient number, since it is larger than the sum of its proper divisors (17248207147).

203454320213 is a wasteful number, since it uses less digits than its factorization.

203454320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34588.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 203454320213 its reverse (312023454302), we get a palindrome (515477774515).

The spelling of 203454320213 in words is "two hundred three billion, four hundred fifty-four million, three hundred twenty thousand, two hundred thirteen".