201320203231 has 16 divisors (see below), whose sum is σ = 231257714688. Its totient is φ = 171678283200.

The previous prime is 201320203223. The next prime is 201320203243. The reversal of 201320203231 is 132302023102.

It is a cyclic number.

It is not a de Polignac number, because 201320203231 - 2³ = 201320203223 is a prime.

It is a super-2 number, since 2×201320203231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201320203199 and 201320203208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201320203631) 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, 1957626 + ... + 2057896.

It is an arithmetic number, because the mean of its divisors is an integer number (14453607168).

Almost surely, 2^201320203231 is an apocalyptic number.

201320203231 is a deficient number, since it is larger than the sum of its proper divisors (29937511457).

201320203231 is a wasteful number, since it uses less digits than its factorization.

201320203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101742.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 201320203231 its reverse (132302023102), we get a palindrome (333622226333).

The spelling of 201320203231 in words is "two hundred one billion, three hundred twenty million, two hundred three thousand, two hundred thirty-one".