323220143442 has 24 divisors (see below), whose sum is σ = 751981558896. Its totient is φ = 92348612328.

The previous prime is 323220143437. The next prime is 323220143473. The reversal of 323220143442 is 244341022323.

It is a super-2 number, since 2×323220143442² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549693828 + ... + 549694415.

It is an arithmetic number, because the mean of its divisors is an integer number (31332564954).

Almost surely, 2^323220143442 is an apocalyptic number.

323220143442 is an abundant number, since it is smaller than the sum of its proper divisors (428761415454).

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

323220143442 is a wasteful number, since it uses less digits than its factorization.

323220143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099388262 (or 1099388255 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 323220143442 its reverse (244341022323), we get a palindrome (567561165765).

The spelling of 323220143442 in words is "three hundred twenty-three billion, two hundred twenty million, one hundred forty-three thousand, four hundred forty-two".