201310231332 has 72 divisors (see below), whose sum is σ = 547243693920. Its totient is φ = 57429818880.

The previous prime is 201310231271. The next prime is 201310231337. The reversal of 201310231332 is 233132013102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 201310231299 and 201310231308.

It is not an unprimeable number, because it can be changed into a prime (201310231337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127732 + ... + 647252.

It is an arithmetic number, because the mean of its divisors is an integer number (7600606860).

Almost surely, 2^201310231332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201310231332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273621846960).

201310231332 is an abundant number, since it is smaller than the sum of its proper divisors (345933462588).

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

201310231332 is a wasteful number, since it uses less digits than its factorization.

201310231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520201 (or 520192 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201310231332 its reverse (233132013102), we get a palindrome (434442244434).

The spelling of 201310231332 in words is "two hundred one billion, three hundred ten million, two hundred thirty-one thousand, three hundred thirty-two".