320424806249 has 2 divisors, whose sum is σ = 320424806250. Its totient is φ = 320424806248.

The previous prime is 320424806231. The next prime is 320424806287. The reversal of 320424806249 is 942608424023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311721222400 + 8703583849 = 558320^2 + 93293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320424806249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320424806209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160212403124 + 160212403125.

It is an arithmetic number, because the mean of its divisors is an integer number (160212403125).

Almost surely, 2^320424806249 is an apocalyptic number.

It is an amenable number.

320424806249 is a deficient number, since it is larger than the sum of its proper divisors (1).

320424806249 is an equidigital number, since it uses as much as digits as its factorization.

320424806249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 320424806249 in words is "three hundred twenty billion, four hundred twenty-four million, eight hundred six thousand, two hundred forty-nine".