321213242 has 16 divisors (see below), whose sum is σ = 551041920. Its totient is φ = 137565168.

The previous prime is 321213223. The next prime is 321213271. The reversal of 321213242 is 242312123.

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, 14468 + ... + 29184.

It is an arithmetic number, because the mean of its divisors is an integer number (34440120).

Almost surely, 2^321213242 is an apocalyptic number.

321213242 is a deficient number, since it is larger than the sum of its proper divisors (229828678).

321213242 is a wasteful number, since it uses less digits than its factorization.

321213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16285.

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

The square root of 321213242 is about 17922.4228830814. The cubic root of 321213242 is about 684.8537112795.

Adding to 321213242 its reverse (242312123), we get a palindrome (563525365).

The spelling of 321213242 in words is "three hundred twenty-one million, two hundred thirteen thousand, two hundred forty-two".