322351440420 has 192 divisors, whose sum is σ = 925837516800. Its totient is φ = 83779238400.

The previous prime is 322351440413. The next prime is 322351440427. The reversal of 322351440420 is 24044153223.

It is an interprime number because it is at equal distance from previous prime (322351440413) and next prime (322351440427).

It is a super-2 number, since 2×322351440420² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (322351440427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 200591257 + ... + 200592863.

It is an arithmetic number, because the mean of its divisors is an integer number (4822070400).

Almost surely, 2^322351440420 is an apocalyptic number.

322351440420 is a gapful number since it is divisible by the number (30) 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 322351440420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462918758400).

322351440420 is an abundant number, since it is smaller than the sum of its proper divisors (603486076380).

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

322351440420 is a wasteful number, since it uses less digits than its factorization.

322351440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 322351440420 its reverse (24044153223), we get a palindrome (346395593643).

The spelling of 322351440420 in words is "three hundred twenty-two billion, three hundred fifty-one million, four hundred forty thousand, four hundred twenty".