321135305325512 has 8 divisors (see below), whose sum is σ = 602128697485350. Its totient is φ = 160567652662752.

The previous prime is 321135305325511. The next prime is 321135305325587. The reversal of 321135305325512 is 215523503531123.

It can be written as a sum of positive squares in only one way, i.e., 260177093560036 + 60958211765476 = 16130006^2 + 7807574^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 321135305325512.

It is not an unprimeable number, because it can be changed into a prime (321135305325511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20070956582837 + ... + 20070956582852.

Almost surely, 2^{321135305325512} is an apocalyptic number.

It is an amenable number.

321135305325512 is a deficient number, since it is larger than the sum of its proper divisors (280993392159838).

321135305325512 is a wasteful number, since it uses less digits than its factorization.

321135305325512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40141913165695 (or 40141913165691 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 41.

Adding to 321135305325512 its reverse (215523503531123), we get a palindrome (536658808856635).

The spelling of 321135305325512 in words is "three hundred twenty-one trillion, one hundred thirty-five billion, three hundred five million, three hundred twenty-five thousand, five hundred twelve".