320100030 has 48 divisors (see below), whose sum is σ = 876067920. Its totient is φ = 80866944.

The previous prime is 320099977. The next prime is 320100031. The reversal of 320100030 is 30001023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 320099985 and 320100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320100031) 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, 91887 + ... + 95306.

It is an arithmetic number, because the mean of its divisors is an integer number (18251415).

Almost surely, 2^320100030 is an apocalyptic number.

320100030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320100030 is an abundant number, since it is smaller than the sum of its proper divisors (555967890).

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

320100030 is a wasteful number, since it uses less digits than its factorization.

320100030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187225 (or 187222 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 320100030 is about 17891.3395250328. The cubic root of 320100030 is about 684.0616416182.

Adding to 320100030 its reverse (30001023), we get a palindrome (350101053).

The spelling of 320100030 in words is "three hundred twenty million, one hundred thousand, thirty".