123012313321 has 2 divisors, whose sum is σ = 123012313322. Its totient is φ = 123012313320.

The previous prime is 123012313273. The next prime is 123012313331. The reversal of 123012313321 is 123313210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82234165225 + 40778148096 = 286765^2 + 201936^2 .

It is a cyclic number.

It is not a de Polignac number, because 123012313321 - 2²³ = 123003924713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123012313292 and 123012313301.

It is not a weakly prime, because it can be changed into another prime (123012313331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506156660 + 61506156661.

It is an arithmetic number, because the mean of its divisors is an integer number (61506156661).

Almost surely, 2^123012313321 is an apocalyptic number.

It is an amenable number.

123012313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012313321 is an equidigital number, since it uses as much as digits as its factorization.

123012313321 is an evil number, because the sum of its binary digits is even.

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

Adding to 123012313321 its reverse (123313210321), we get a palindrome (246325523642).

The spelling of 123012313321 in words is "one hundred twenty-three billion, twelve million, three hundred thirteen thousand, three hundred twenty-one".