321340442 has 16 divisors (see below), whose sum is σ = 491974560. Its totient is φ = 157376208.

The previous prime is 321340441. The next prime is 321340469. The reversal of 321340442 is 244043123.

It is a super-3 number, since 3×321340442³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (321340441) 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, 17288 + ... + 30684.

It is an arithmetic number, because the mean of its divisors is an integer number (30748410).

Almost surely, 2^321340442 is an apocalyptic number.

321340442 is a deficient number, since it is larger than the sum of its proper divisors (170634118).

321340442 is a wasteful number, since it uses less digits than its factorization.

321340442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13645.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 321340442 is about 17925.9711591869. The cubic root of 321340442 is about 684.9440997237.

Adding to 321340442 its reverse (244043123), we get a palindrome (565383565).

The spelling of 321340442 in words is "three hundred twenty-one million, three hundred forty thousand, four hundred forty-two".