331608630 has 32 divisors (see below), whose sum is σ = 842677344. Its totient is φ = 83227136.

The previous prime is 331608623. The next prime is 331608679. The reversal of 331608630 is 36806133.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324597 + ... + 325616.

It is an arithmetic number, because the mean of its divisors is an integer number (26333667).

Almost surely, 2^331608630 is an apocalyptic number.

331608630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331608630 is an abundant number, since it is smaller than the sum of its proper divisors (511068714).

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

331608630 is a wasteful number, since it uses less digits than its factorization.

331608630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650240.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 331608630 is about 18210.1243817828. The cubic root of 331608630 is about 692.1633634269.

The spelling of 331608630 in words is "three hundred thirty-one million, six hundred eight thousand, six hundred thirty".