320001043 has 2 divisors, whose sum is σ = 320001044. Its totient is φ = 320001042.

The previous prime is 320001007. The next prime is 320001083. The reversal of 320001043 is 340100023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320001043 - 2²¹ = 317903891 is a prime.

It is not a weakly prime, because it can be changed into another prime (320001083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160000521 + 160000522.

It is an arithmetic number, because the mean of its divisors is an integer number (160000522).

Almost surely, 2^320001043 is an apocalyptic number.

320001043 is a deficient number, since it is larger than the sum of its proper divisors (1).

320001043 is an equidigital number, since it uses as much as digits as its factorization.

320001043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320001043 is about 17888.5729727108. The cubic root of 320001043 is about 683.9911217969.

Adding to 320001043 its reverse (340100023), we get a palindrome (660101066).

The spelling of 320001043 in words is "three hundred twenty million, one thousand, forty-three".