320130432 has 48 divisors (see below), whose sum is σ = 921211980. Its totient is φ = 106709760.

The previous prime is 320130431. The next prime is 320130511. The reversal of 320130432 is 234031023.

320130432 is a `hidden beast` number, since 3 + 201 + 30 + 432 = 666.

320130432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320130431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137794 + ... + 140097.

Almost surely, 2^320130432 is an apocalyptic number.

320130432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320130432 is an abundant number, since it is smaller than the sum of its proper divisors (601081548).

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

320130432 is a wasteful number, since it uses less digits than its factorization.

320130432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277911 (or 277896 counting only the distinct ones).

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

The square root of 320130432 is about 17892.1891338092. The cubic root of 320130432 is about 684.0832975400.

Adding to 320130432 its reverse (234031023), we get a palindrome (554161455).

It can be divided in two parts, 3201 and 30432, that added together give a palindrome (33633).

The spelling of 320130432 in words is "three hundred twenty million, one hundred thirty thousand, four hundred thirty-two".