320312100 has 36 divisors (see below), whose sum is σ = 926770544. Its totient is φ = 85416480.

The previous prime is 320312077. The next prime is 320312177. The reversal of 320312100 is 1213023.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 533554 + ... + 534153.

Almost surely, 2^320312100 is an apocalyptic number.

320312100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320312100 is an abundant number, since it is smaller than the sum of its proper divisors (606458444).

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

320312100 is a wasteful number, since it uses less digits than its factorization.

320312100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067724 (or 1067717 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 320312100 is about 17897.2651542072. The cubic root of 320312100 is about 684.2126745391.

Adding to 320312100 its reverse (1213023), we get a palindrome (321525123).

The spelling of 320312100 in words is "three hundred twenty million, three hundred twelve thousand, one hundred".