320131296 has 144 divisors (see below), whose sum is σ = 981227520. Its totient is φ = 98714880.

The previous prime is 320131277. The next prime is 320131307. The reversal of 320131296 is 692131023.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 204565 + ... + 206123.

It is an arithmetic number, because the mean of its divisors is an integer number (6814080).

Almost surely, 2^320131296 is an apocalyptic number.

320131296 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320131296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490613760).

320131296 is an abundant number, since it is smaller than the sum of its proper divisors (661096224).

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

320131296 is a wasteful number, since it uses less digits than its factorization.

320131296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 320131296 is about 17892.2132784069. The cubic root of 320131296 is about 684.0839129636.

The spelling of 320131296 in words is "three hundred twenty million, one hundred thirty-one thousand, two hundred ninety-six".