201331230331 has 16 divisors (see below), whose sum is σ = 256133030400. Its totient is φ = 156881475240.

The previous prime is 201331230323. The next prime is 201331230413. The reversal of 201331230331 is 133032133102.

It is not a de Polignac number, because 201331230331 - 2³ = 201331230323 is a prime.

It is a super-2 number, since 2×201331230331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201331230031) 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, 26676751 + ... + 26684296.

It is an arithmetic number, because the mean of its divisors is an integer number (16008314400).

Almost surely, 2^201331230331 is an apocalyptic number.

201331230331 is a deficient number, since it is larger than the sum of its proper divisors (54801800069).

201331230331 is an equidigital number, since it uses as much as digits as its factorization.

201331230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53361079 (or 53361065 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 201331230331 its reverse (133032133102), we get a palindrome (334363363433).

The spelling of 201331230331 in words is "two hundred one billion, three hundred thirty-one million, two hundred thirty thousand, three hundred thirty-one".