321310111321 has 16 divisors (see below), whose sum is σ = 326079648000. Its totient is φ = 316558988928.

The previous prime is 321310111313. The next prime is 321310111327. The reversal of 321310111321 is 123111013123.

It is a cyclic number.

It is not a de Polignac number, because 321310111321 - 2³ = 321310111313 is a prime.

It is a super-2 number, since 2×321310111321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321310111327) 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, 105380605 + ... + 105383653.

It is an arithmetic number, because the mean of its divisors is an integer number (20379978000).

Almost surely, 2^321310111321 is an apocalyptic number.

It is an amenable number.

321310111321 is a deficient number, since it is larger than the sum of its proper divisors (4769536679).

321310111321 is a wasteful number, since it uses less digits than its factorization.

321310111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 321310111321 its reverse (123111013123), we get a palindrome (444421124444).

The spelling of 321310111321 in words is "three hundred twenty-one billion, three hundred ten million, one hundred eleven thousand, three hundred twenty-one".