320121130 has 32 divisors (see below), whose sum is σ = 687170304. Its totient is φ = 104983296.

The previous prime is 320121127. The next prime is 320121149. The reversal of 320121130 is 31121023.

It is a self number, because there is not a number n which added to its sum of digits gives 320121130.

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, 97807 + ... + 101026.

It is an arithmetic number, because the mean of its divisors is an integer number (21474072).

Almost surely, 2^320121130 is an apocalyptic number.

320121130 is an abundant number, since it is smaller than the sum of its proper divisors (367049174).

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

320121130 is a wasteful number, since it uses less digits than its factorization.

320121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198870.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320121130 is about 17891.9291860883. The cubic root of 320121130 is about 684.0766716944.

Adding to 320121130 its reverse (31121023), we get a palindrome (351242153).

The spelling of 320121130 in words is "three hundred twenty million, one hundred twenty-one thousand, one hundred thirty".