323440317947 has 2 divisors, whose sum is σ = 323440317948. Its totient is φ = 323440317946.

The previous prime is 323440317931. The next prime is 323440317997. The reversal of 323440317947 is 749713044323.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 323440317947 - 2⁴ = 323440317931 is a prime.

It is a super-2 number, since 2×323440317947² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (323440317997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161720158973 + 161720158974.

It is an arithmetic number, because the mean of its divisors is an integer number (161720158974).

Almost surely, 2^323440317947 is an apocalyptic number.

323440317947 is a deficient number, since it is larger than the sum of its proper divisors (1).

323440317947 is an equidigital number, since it uses as much as digits as its factorization.

323440317947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 323440317947 in words is "three hundred twenty-three billion, four hundred forty million, three hundred seventeen thousand, nine hundred forty-seven".