123313211321 has 16 divisors (see below), whose sum is σ = 132307934976. Its totient is φ = 114522087936.

The previous prime is 123313211293. The next prime is 123313211327. The reversal of 123313211321 is 123112313321.

It is not a de Polignac number, because 123313211321 - 2¹⁴ = 123313194937 is a prime.

It is a super-2 number, since 2×123313211321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123313211327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230420 + ... + 547466.

It is an arithmetic number, because the mean of its divisors is an integer number (8269245936).

Almost surely, 2^123313211321 is an apocalyptic number.

It is an amenable number.

123313211321 is a deficient number, since it is larger than the sum of its proper divisors (8994723655).

123313211321 is a wasteful number, since it uses less digits than its factorization.

123313211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317368.

The product of its digits is 648, while the sum is 23.

Adding to 123313211321 its reverse (123112313321), we get a palindrome (246425524642).

The spelling of 123313211321 in words is "one hundred twenty-three billion, three hundred thirteen million, two hundred eleven thousand, three hundred twenty-one".