321310323121 has 4 divisors (see below), whose sum is σ = 321314832244. Its totient is φ = 321305814000.

The previous prime is 321310323107. The next prime is 321310323133. The reversal of 321310323121 is 121323013123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 273377351025 + 47932972096 = 522855^2 + 218936^2 .

It is a cyclic number.

It is not a de Polignac number, because 321310323121 - 2¹³ = 321310314929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321310323092 and 321310323101.

It is not an unprimeable number, because it can be changed into a prime (321310323161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145930 + ... + 2290771.

It is an arithmetic number, because the mean of its divisors is an integer number (80328708061).

Almost surely, 2^321310323121 is an apocalyptic number.

It is an amenable number.

321310323121 is a deficient number, since it is larger than the sum of its proper divisors (4509123).

321310323121 is an equidigital number, since it uses as much as digits as its factorization.

321310323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509122.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 321310323121 its reverse (121323013123), we get a palindrome (442633336244).

The spelling of 321310323121 in words is "three hundred twenty-one billion, three hundred ten million, three hundred twenty-three thousand, one hundred twenty-one".