320142330 has 48 divisors (see below), whose sum is σ = 835669224. Its totient is φ = 85032960.

The previous prime is 320142299. The next prime is 320142379. The reversal of 320142330 is 33241023.

320142330 is a `hidden beast` number, since 320 + 14 + 2 + 330 = 666.

320142330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 303909489 + 16232841 = 17433^2 + 4029^2 .

It is a super-4 number, since 4×320142330⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16210 + ... + 30050.

Almost surely, 2^320142330 is an apocalyptic number.

320142330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320142330 is an abundant number, since it is smaller than the sum of its proper divisors (515526894).

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

320142330 is a wasteful number, since it uses less digits than its factorization.

320142330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14111 (or 14108 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320142330 is about 17892.5216221750. The cubic root of 320142330 is about 684.0917723380.

Adding to 320142330 its reverse (33241023), we get a palindrome (353383353).

The spelling of 320142330 in words is "three hundred twenty million, one hundred forty-two thousand, three hundred thirty".