321331142 has 16 divisors (see below), whose sum is σ = 528574464. Its totient is φ = 145293000.

The previous prime is 321331141. The next prime is 321331187. The reversal of 321331142 is 241133123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321331141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34034 + ... + 42437.

It is an arithmetic number, because the mean of its divisors is an integer number (33035904).

Almost surely, 2^321331142 is an apocalyptic number.

321331142 is a deficient number, since it is larger than the sum of its proper divisors (207243322).

321331142 is a wasteful number, since it uses less digits than its factorization.

321331142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76675.

The product of its digits is 432, while the sum is 20.

The square root of 321331142 is about 17925.7117571381. The cubic root of 321331142 is about 684.9374919430.

Adding to 321331142 its reverse (241133123), we get a palindrome (562464265).

The spelling of 321331142 in words is "three hundred twenty-one million, three hundred thirty-one thousand, one hundred forty-two".