201223233231 has 16 divisors (see below), whose sum is σ = 279323586144. Its totient is φ = 128735184384.

The previous prime is 201223233229. The next prime is 201223233247. The reversal of 201223233231 is 132332322102.

It is not a de Polignac number, because 201223233231 - 2¹ = 201223233229 is a prime.

It is a super-2 number, since 2×201223233231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201223223231) 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, 12408486 + ... + 12424691.

It is an arithmetic number, because the mean of its divisors is an integer number (17457724134).

Almost surely, 2^201223233231 is an apocalyptic number.

201223233231 is a deficient number, since it is larger than the sum of its proper divisors (78100352913).

201223233231 is a wasteful number, since it uses less digits than its factorization.

201223233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24833290.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 201223233231 its reverse (132332322102), we get a palindrome (333555555333).

The spelling of 201223233231 in words is "two hundred one billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred thirty-one".