321323012 has 6 divisors (see below), whose sum is σ = 562315278. Its totient is φ = 160661504.

The previous prime is 321322997. The next prime is 321323021. The reversal of 321323012 is 210323123.

It can be written as a sum of positive squares in only one way, i.e., 266799556 + 54523456 = 16334^2 + 7384^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40165373 + ... + 40165380.

It is an arithmetic number, because the mean of its divisors is an integer number (93719213).

Almost surely, 2^321323012 is an apocalyptic number.

It is an amenable number.

321323012 is a deficient number, since it is larger than the sum of its proper divisors (240992266).

321323012 is a wasteful number, since it uses less digits than its factorization.

321323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80330757 (or 80330755 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 321323012 is about 17925.4849864655. The cubic root of 321323012 is about 684.9317153592.

Adding to 321323012 its reverse (210323123), we get a palindrome (531646135).

The spelling of 321323012 in words is "three hundred twenty-one million, three hundred twenty-three thousand, twelve".