320231541650256 has 160 divisors (see below), whose sum is σ = 944050543862400. Its totient is φ = 103856168908800.

The previous prime is 320231541650201. The next prime is 320231541650269. The reversal of 320231541650256 is 652056145132023.

320231541650256 is a `hidden beast` number, since 3 + 2 + 0 + 2 + 3 + 1 + 541 + 6 + 50 + 2 + 56 = 666.

It is a super-3 number, since 3×320231541650256³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665509080 + ... + 665990088.

It is an arithmetic number, because the mean of its divisors is an integer number (5900315899140).

Almost surely, 2^{320231541650256} is an apocalyptic number.

320231541650256 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 320231541650256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472025271931200).

320231541650256 is an abundant number, since it is smaller than the sum of its proper divisors (623819002212144).

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

320231541650256 is a wasteful number, since it uses less digits than its factorization.

320231541650256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522714 (or 522702 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

Adding to 320231541650256 its reverse (652056145132023), we get a palindrome (972287686782279).

The spelling of 320231541650256 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred forty-one million, six hundred fifty thousand, two hundred fifty-six".