322131132320 has 96 divisors (see below), whose sum is σ = 788794387920. Its totient is φ = 124169543680.

The previous prime is 322131132317. The next prime is 322131132331. The reversal of 322131132320 is 23231131223.

It can be written as a sum of positive squares in 8 ways, for example, as 191385250576 + 130745881744 = 437476^2 + 361588^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2350814 + ... + 2484066.

Almost surely, 2^322131132320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322131132320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394397193960).

322131132320 is an abundant number, since it is smaller than the sum of its proper divisors (466663255600).

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

322131132320 is a wasteful number, since it uses less digits than its factorization.

322131132320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133818 (or 133810 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 322131132320 its reverse (23231131223), we get a palindrome (345362263543).

The spelling of 322131132320 in words is "three hundred twenty-two billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred twenty".