203331020213 has 4 divisors (see below), whose sum is σ = 203341141740. Its totient is φ = 203320898688.

The previous prime is 203331020209. The next prime is 203331020219. The reversal of 203331020213 is 312020133302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312020133302 = 2 ⋅156010066651.

It can be written as a sum of positive squares in 2 ways, for example, as 190814333329 + 12516686884 = 436823^2 + 111878^2 .

It is a cyclic number.

It is not a de Polignac number, because 203331020213 - 2² = 203331020209 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 (203331020219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030570 + ... + 5070827.

It is an arithmetic number, because the mean of its divisors is an integer number (50835285435).

Almost surely, 2^203331020213 is an apocalyptic number.

It is an amenable number.

203331020213 is a deficient number, since it is larger than the sum of its proper divisors (10121527).

203331020213 is a wasteful number, since it uses less digits than its factorization.

203331020213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121526.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203331020213 its reverse (312020133302), we get a palindrome (515351153515).

The spelling of 203331020213 in words is "two hundred three billion, three hundred thirty-one million, twenty thousand, two hundred thirteen".