331244333420 has 192 divisors, whose sum is σ = 974578784256. Its totient is φ = 91159326720.

The previous prime is 331244333401. The next prime is 331244333467. The reversal of 331244333420 is 24333442133.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100772 + ... + 820148.

It is an arithmetic number, because the mean of its divisors is an integer number (5075931168).

Almost surely, 2^331244333420 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 331244333420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487289392128).

331244333420 is an abundant number, since it is smaller than the sum of its proper divisors (643334450836).

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

331244333420 is a wasteful number, since it uses less digits than its factorization.

331244333420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719440 (or 719438 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 331244333420 its reverse (24333442133), we get a palindrome (355577775553).

The spelling of 331244333420 in words is "three hundred thirty-one billion, two hundred forty-four million, three hundred thirty-three thousand, four hundred twenty".