331030420 has 48 divisors (see below), whose sum is σ = 797086080. Its totient is φ = 113122944.

The previous prime is 331030397. The next prime is 331030423. The reversal of 331030420 is 24030133.

It is a super-2 number, since 2×331030420² = 219162277930752800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331030394 and 331030403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331030423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40651 + ... + 48109.

It is an arithmetic number, because the mean of its divisors is an integer number (16605960).

Almost surely, 2^331030420 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 331030420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398543040).

331030420 is an abundant number, since it is smaller than the sum of its proper divisors (466055660).

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

331030420 is a wasteful number, since it uses less digits than its factorization.

331030420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792 (or 7790 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 331030420 is about 18194.2413966617. The cubic root of 331030420 is about 691.7608320691.

Adding to 331030420 its reverse (24030133), we get a palindrome (355060553).

The spelling of 331030420 in words is "three hundred thirty-one million, thirty thousand, four hundred twenty".