203220201311 has 32 divisors (see below), whose sum is σ = 218998080000. Its totient is φ = 188007063552.

The previous prime is 203220201307. The next prime is 203220201319. The reversal of 203220201311 is 113102022302.

It is not a de Polignac number, because 203220201311 - 2² = 203220201307 is a prime.

It is a super-2 number, since 2×203220201311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203220201311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203220201319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95452295 + ... + 95454423.

It is an arithmetic number, because the mean of its divisors is an integer number (6843690000).

Almost surely, 2^203220201311 is an apocalyptic number.

203220201311 is a deficient number, since it is larger than the sum of its proper divisors (15777878689).

203220201311 is a wasteful number, since it uses less digits than its factorization.

203220201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203220201311 its reverse (113102022302), we get a palindrome (316322223613).

The spelling of 203220201311 in words is "two hundred three billion, two hundred twenty million, two hundred one thousand, three hundred eleven".