320540130 has 48 divisors (see below), whose sum is σ = 843972480. Its totient is φ = 84393504.

The previous prime is 320540119. The next prime is 320540137. The reversal of 320540130 is 31045023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (320540137) 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, 15432 + ... + 29651.

It is an arithmetic number, because the mean of its divisors is an integer number (17582760).

Almost surely, 2^320540130 is an apocalyptic number.

320540130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320540130 is an abundant number, since it is smaller than the sum of its proper divisors (523432350).

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

320540130 is a wasteful number, since it uses less digits than its factorization.

320540130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45175 (or 45172 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 320540130 is about 17903.6345472086. The cubic root of 320540130 is about 684.3749995621.

Adding to 320540130 its reverse (31045023), we get a palindrome (351585153).

The spelling of 320540130 in words is "three hundred twenty million, five hundred forty thousand, one hundred thirty".