331030020 has 24 divisors (see below), whose sum is σ = 926884224. Its totient is φ = 88274656.

The previous prime is 331030003. The next prime is 331030031. The reversal of 331030020 is 20030133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 331029978 and 331030005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2758524 + ... + 2758643.

It is an arithmetic number, because the mean of its divisors is an integer number (38620176).

Almost surely, 2^331030020 is an apocalyptic number.

331030020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331030020 is an abundant number, since it is smaller than the sum of its proper divisors (595854204).

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

331030020 is a wasteful number, since it uses less digits than its factorization.

331030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517179 (or 5517177 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 331030020 is about 18194.2304041693. The cubic root of 331030020 is about 691.7605534397.

Adding to 331030020 its reverse (20030133), we get a palindrome (351060153).

The spelling of 331030020 in words is "three hundred thirty-one million, thirty thousand, twenty".