203445200213 has 4 divisors (see below), whose sum is σ = 205459509228. Its totient is φ = 201430891200.

The previous prime is 203445200159. The next prime is 203445200249. The reversal of 203445200213 is 312002544302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 199560545284 + 3884654929 = 446722^2 + 62327^2 .

It is a cyclic number.

It is not a de Polignac number, because 203445200213 - 2⁶ = 203445200149 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 (203445200263) 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, 1007154356 + ... + 1007154557.

It is an arithmetic number, because the mean of its divisors is an integer number (51364877307).

Almost surely, 2^203445200213 is an apocalyptic number.

It is an amenable number.

203445200213 is a deficient number, since it is larger than the sum of its proper divisors (2014309015).

203445200213 is a wasteful number, since it uses less digits than its factorization.

203445200213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014309014.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 203445200213 its reverse (312002544302), we get a palindrome (515447744515).

The spelling of 203445200213 in words is "two hundred three billion, four hundred forty-five million, two hundred thousand, two hundred thirteen".