343321665522 has 128 divisors (see below), whose sum is σ = 775579484160. Its totient is φ = 100425162240.

The previous prime is 343321665439. The next prime is 343321665529. The reversal of 343321665522 is 225566123343.

It is not an unprimeable number, because it can be changed into a prime (343321665529) 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, 119248879 + ... + 119251757.

It is an arithmetic number, because the mean of its divisors is an integer number (6059214720).

Almost surely, 2^343321665522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343321665522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387789742080).

343321665522 is an abundant number, since it is smaller than the sum of its proper divisors (432257818638).

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

343321665522 is a wasteful number, since it uses less digits than its factorization.

343321665522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its digits is 777600, while the sum is 42.

Adding to 343321665522 its reverse (225566123343), we get a palindrome (568887788865).

The spelling of 343321665522 in words is "three hundred forty-three billion, three hundred twenty-one million, six hundred sixty-five thousand, five hundred twenty-two".