323121351643 has 2 divisors, whose sum is σ = 323121351644. Its totient is φ = 323121351642.

The previous prime is 323121351599. The next prime is 323121351649. The reversal of 323121351643 is 346153121323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323121351643 - 2¹³ = 323121343451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 323121351599 and 323121351608.

It is not a weakly prime, because it can be changed into another prime (323121351649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161560675821 + 161560675822.

It is an arithmetic number, because the mean of its divisors is an integer number (161560675822).

Almost surely, 2^323121351643 is an apocalyptic number.

323121351643 is a deficient number, since it is larger than the sum of its proper divisors (1).

323121351643 is an equidigital number, since it uses as much as digits as its factorization.

323121351643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

Adding to 323121351643 its reverse (346153121323), we get a palindrome (669274472966).

The spelling of 323121351643 in words is "three hundred twenty-three billion, one hundred twenty-one million, three hundred fifty-one thousand, six hundred forty-three".