321340332 has 12 divisors (see below), whose sum is σ = 749794136. Its totient is φ = 107113440.

The previous prime is 321340309. The next prime is 321340343. The reversal of 321340332 is 233043123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 321340299 and 321340308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13389169 + ... + 13389192.

Almost surely, 2^321340332 is an apocalyptic number.

It is an amenable number.

321340332 is an abundant number, since it is smaller than the sum of its proper divisors (428453804).

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

321340332 is a wasteful number, since it uses less digits than its factorization.

321340332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26778368 (or 26778366 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 321340332 is about 17925.9680910125. The cubic root of 321340332 is about 684.9440215679.

Adding to 321340332 its reverse (233043123), we get a palindrome (554383455).

The spelling of 321340332 in words is "three hundred twenty-one million, three hundred forty thousand, three hundred thirty-two".