201231331120 has 40 divisors (see below), whose sum is σ = 472003245216. Its totient is φ = 79780205568.

The previous prime is 201231331087. The next prime is 201231331123. The reversal of 201231331120 is 21133132102.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (201231331123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11121012 + ... + 11139091.

Almost surely, 2^201231331120 is an apocalyptic number.

201231331120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231331120 is an abundant number, since it is smaller than the sum of its proper divisors (270771914096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201231331120 is a wasteful number, since it uses less digits than its factorization.

201231331120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22260229 (or 22260223 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201231331120 its reverse (21133132102), we get a palindrome (222364463222).

The spelling of 201231331120 in words is "two hundred one billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred twenty".