320135442732 has 144 divisors (see below), whose sum is σ = 989471392000. Its totient is φ = 85232580480.

The previous prime is 320135442661. The next prime is 320135442743. The reversal of 320135442732 is 237244531023.

320135442732 is a `hidden beast` number, since 3 + 201 + 3 + 5 + 442 + 7 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255982 + ... + 840117.

Almost surely, 2^320135442732 is an apocalyptic number.

It is an amenable number.

320135442732 is an abundant number, since it is smaller than the sum of its proper divisors (669335949268).

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

320135442732 is a wasteful number, since it uses less digits than its factorization.

320135442732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096196 (or 1096191 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

Adding to 320135442732 its reverse (237244531023), we get a palindrome (557379973755).

It can be divided in two parts, 32013 and 5442732, that added together give a palindrome (5474745).

The spelling of 320135442732 in words is "three hundred twenty billion, one hundred thirty-five million, four hundred forty-two thousand, seven hundred thirty-two".