321340052 has 24 divisors (see below), whose sum is σ = 649555200. Its totient is φ = 137471360.

The previous prime is 321340051. The next prime is 321340093. The reversal of 321340052 is 250043123.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321340051) 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, 214052 + ... + 215547.

It is an arithmetic number, because the mean of its divisors is an integer number (27064800).

Almost surely, 2^321340052 is an apocalyptic number.

It is an amenable number.

321340052 is an abundant number, since it is smaller than the sum of its proper divisors (328215148).

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

321340052 is a wasteful number, since it uses less digits than its factorization.

321340052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429631 (or 429629 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 321340052 is about 17925.9602811119. The cubic root of 321340052 is about 684.9438226258.

Adding to 321340052 its reverse (250043123), we get a palindrome (571383175).

The spelling of 321340052 in words is "three hundred twenty-one million, three hundred forty thousand, fifty-two".