342221312 has 80 divisors (see below), whose sum is σ = 728048640. Its totient is φ = 160247808.

The previous prime is 342221309. The next prime is 342221353. The reversal of 342221312 is 213122243.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235318 + ... + 1235594.

It is an arithmetic number, because the mean of its divisors is an integer number (9100608).

Almost surely, 2^342221312 is an apocalyptic number.

342221312 is a gapful number since it is divisible by the number (32) 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 342221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364024320).

342221312 is an abundant number, since it is smaller than the sum of its proper divisors (385827328).

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

342221312 is a wasteful number, since it uses less digits than its factorization.

342221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 425 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 342221312 is about 18499.2246324001. The cubic root of 342221312 is about 699.4698789043.

Adding to 342221312 its reverse (213122243), we get a palindrome (555343555).

The spelling of 342221312 in words is "three hundred forty-two million, two hundred twenty-one thousand, three hundred twelve".