3123210023321 has 2 divisors, whose sum is σ = 3123210023322. Its totient is φ = 3123210023320.

The previous prime is 3123210023303. The next prime is 3123210023377. The reversal of 3123210023321 is 1233200123213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2999702761225 + 123507262096 = 1731965^2 + 351436^2 .

It is an emirp because it is prime and its reverse (1233200123213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3123210023321 - 2¹⁰ = 3123210022297 is a prime.

It is a super-2 number, since 2×3123210023321² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3123210923321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561605011660 + 1561605011661.

It is an arithmetic number, because the mean of its divisors is an integer number (1561605011661).

Almost surely, 2^{3123210023321} is an apocalyptic number.

It is an amenable number.

3123210023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123210023321 is an equidigital number, since it uses as much as digits as its factorization.

3123210023321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 3123210023321 its reverse (1233200123213), we get a palindrome (4356410146534).

The spelling of 3123210023321 in words is "three trillion, one hundred twenty-three billion, two hundred ten million, twenty-three thousand, three hundred twenty-one".