322131140443420 has 192 divisors, whose sum is σ = 855142079533056. Its totient is φ = 99007008030720.

The previous prime is 322131140443339. The next prime is 322131140443433. The reversal of 322131140443420 is 24344041131223.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 507033997 + ... + 507668923.

It is an arithmetic number, because the mean of its divisors is an integer number (4453864997568).

Almost surely, 2^{322131140443420} 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 322131140443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427571039766528).

322131140443420 is an abundant number, since it is smaller than the sum of its proper divisors (533010939089636).

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

322131140443420 is a wasteful number, since it uses less digits than its factorization.

322131140443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639540 (or 639538 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 322131140443420 its reverse (24344041131223), we get a palindrome (346475181574643).

The spelling of 322131140443420 in words is "three hundred twenty-two trillion, one hundred thirty-one billion, one hundred forty million, four hundred forty-three thousand, four hundred twenty".