331403344244 has 72 divisors (see below), whose sum is σ = 713804414400. Its totient is φ = 134554540176.

The previous prime is 331403344241. The next prime is 331403344253. The reversal of 331403344244 is 442443304133.

It is a super-2 number, since 2×331403344244² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331403344241) 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, 160739 + ... + 829845.

It is an arithmetic number, because the mean of its divisors is an integer number (9913950200).

Almost surely, 2^331403344244 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 331403344244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356902207200).

331403344244 is an abundant number, since it is smaller than the sum of its proper divisors (382401070156).

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

331403344244 is a wasteful number, since it uses less digits than its factorization.

331403344244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669170 (or 669135 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 331403344244 its reverse (442443304133), we get a palindrome (773846648377).

The spelling of 331403344244 in words is "three hundred thirty-one billion, four hundred three million, three hundred forty-four thousand, two hundred forty-four".