203201021313 has 12 divisors (see below), whose sum is σ = 298487376720. Its totient is φ = 133171290456.

The previous prime is 203201021293. The next prime is 203201021329. The reversal of 203201021313 is 313120102302.

203201021313 is a `hidden beast` number, since 2 + 0 + 320 + 10 + 21 + 313 = 666.

It is not a de Polignac number, because 203201021313 - 2³⁴ = 186021152129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203201021383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191337531 + ... + 191338592.

It is an arithmetic number, because the mean of its divisors is an integer number (24873948060).

Almost surely, 2^203201021313 is an apocalyptic number.

It is an amenable number.

203201021313 is a deficient number, since it is larger than the sum of its proper divisors (95286355407).

203201021313 is a wasteful number, since it uses less digits than its factorization.

203201021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382676188 (or 382676185 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203201021313 its reverse (313120102302), we get a palindrome (516321123615).

The spelling of 203201021313 in words is "two hundred three billion, two hundred one million, twenty-one thousand, three hundred thirteen".