321443431142 has 32 divisors (see below), whose sum is σ = 537439188672. Its totient is φ = 143410161664.

The previous prime is 321443431097. The next prime is 321443431151. The reversal of 321443431142 is 241134344123.

It is a junction number, because it is equal to n+sod(n) for n = 321443431099 and 321443431108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1730453 + ... + 1907184.

It is an arithmetic number, because the mean of its divisors is an integer number (16794974646).

Almost surely, 2^321443431142 is an apocalyptic number.

321443431142 is a deficient number, since it is larger than the sum of its proper divisors (215995757530).

321443431142 is a wasteful number, since it uses less digits than its factorization.

321443431142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637792.

The product of its digits is 27648, while the sum is 32.

Adding to 321443431142 its reverse (241134344123), we get a palindrome (562577775265).

The spelling of 321443431142 in words is "three hundred twenty-one billion, four hundred forty-three million, four hundred thirty-one thousand, one hundred forty-two".