321130311321 has 16 divisors (see below), whose sum is σ = 453984096384. Its totient is φ = 201216347904.

The previous prime is 321130311317. The next prime is 321130311323. The reversal of 321130311321 is 123113031123.

It is a happy number.

It is not a de Polignac number, because 321130311321 - 2² = 321130311317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321130311323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4293510 + ... + 4367663.

It is an arithmetic number, because the mean of its divisors is an integer number (28374006024).

Almost surely, 2^321130311321 is an apocalyptic number.

It is an amenable number.

321130311321 is a deficient number, since it is larger than the sum of its proper divisors (132853785063).

321130311321 is a wasteful number, since it uses less digits than its factorization.

321130311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8661920.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 321130311321 its reverse (123113031123), we get a palindrome (444243342444).

The spelling of 321130311321 in words is "three hundred twenty-one billion, one hundred thirty million, three hundred eleven thousand, three hundred twenty-one".