321316052 has 12 divisors (see below), whose sum is σ = 562662996. Its totient is φ = 160555200.

The previous prime is 321315983. The next prime is 321316063. The reversal of 321316052 is 250613123.

It can be written as a sum of positive squares in 2 ways, for example, as 159415876 + 161900176 = 12626^2 + 12724^2 .

It is a congruent number.

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, 18449 + ... + 31352.

It is an arithmetic number, because the mean of its divisors is an integer number (46888583).

Almost surely, 2^321316052 is an apocalyptic number.

It is an amenable number.

321316052 is a deficient number, since it is larger than the sum of its proper divisors (241346944).

321316052 is a wasteful number, since it uses less digits than its factorization.

321316052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51418 (or 51416 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 321316052 is about 17925.2908484075. The cubic root of 321316052 is about 684.9267700145.

Adding to 321316052 its reverse (250613123), we get a palindrome (571929175).

It can be divided in two parts, 32131 and 6052, that added together give a palindrome (38183).

The spelling of 321316052 in words is "three hundred twenty-one million, three hundred sixteen thousand, fifty-two".