3240320947 has 2 divisors, whose sum is σ = 3240320948. Its totient is φ = 3240320946.

The previous prime is 3240320939. The next prime is 3240320957. The reversal of 3240320947 is 7490230423.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3240320947 - 2³ = 3240320939 is a prime.

It is not a weakly prime, because it can be changed into another prime (3240320927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620160473 + 1620160474.

It is an arithmetic number, because the mean of its divisors is an integer number (1620160474).

Almost surely, 2^3240320947 is an apocalyptic number.

3240320947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240320947 is an equidigital number, since it uses as much as digits as its factorization.

3240320947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 3240320947 is about 56923.8170452404. The cubic root of 3240320947 is about 1479.7761024521.

The spelling of 3240320947 in words is "three billion, two hundred forty million, three hundred twenty thousand, nine hundred forty-seven".