203201021311 has 16 divisors (see below), whose sum is σ = 208963198080. Its totient is φ = 197478420480.

The previous prime is 203201021293. The next prime is 203201021329. The reversal of 203201021311 is 113120102302.

It is an interprime number because it is at equal distance from previous prime (203201021293) and next prime (203201021329).

It is a cyclic number.

It is not a de Polignac number, because 203201021311 - 2²⁹ = 202664150399 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 (203201021711) 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, 15030691 + ... + 15044203.

It is an arithmetic number, because the mean of its divisors is an integer number (13060199880).

Almost surely, 2^203201021311 is an apocalyptic number.

203201021311 is a deficient number, since it is larger than the sum of its proper divisors (5762176769).

203201021311 is a wasteful number, since it uses less digits than its factorization.

203201021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14946.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 203201021311 its reverse (113120102302), we get a palindrome (316321123613).

The spelling of 203201021311 in words is "two hundred three billion, two hundred one million, twenty-one thousand, three hundred eleven".