321213131332 has 12 divisors (see below), whose sum is σ = 562143905260. Its totient is φ = 160600586976.

The previous prime is 321213131279. The next prime is 321213131363. The reversal of 321213131332 is 233131312123.

It can be written as a sum of positive squares in 2 ways, for example, as 67374508356 + 253838622976 = 259566^2 + 503824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321213131297 and 321213131306.

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, 1372683 + ... + 1589554.

Almost surely, 2^321213131332 is an apocalyptic number.

It is an amenable number.

321213131332 is a deficient number, since it is larger than the sum of its proper divisors (240930773928).

321213131332 is a wasteful number, since it uses less digits than its factorization.

321213131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989350 (or 2989348 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 321213131332 its reverse (233131312123), we get a palindrome (554344443455).

The spelling of 321213131332 in words is "three hundred twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-two".