320663041 has 2 divisors, whose sum is σ = 320663042. Its totient is φ = 320663040.

The previous prime is 320663029. The next prime is 320663069. The reversal of 320663041 is 140366023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228886641 + 91776400 = 15129^2 + 9580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320663041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320662997 and 320663015.

It is not a weakly prime, because it can be changed into another prime (320663071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160331520 + 160331521.

It is an arithmetic number, because the mean of its divisors is an integer number (160331521).

Almost surely, 2^320663041 is an apocalyptic number.

It is an amenable number.

320663041 is a deficient number, since it is larger than the sum of its proper divisors (1).

320663041 is an equidigital number, since it uses as much as digits as its factorization.

320663041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 320663041 is about 17907.0667893991. The cubic root of 320663041 is about 684.4624628347.

The spelling of 320663041 in words is "three hundred twenty million, six hundred sixty-three thousand, forty-one".