320420423441 has 2 divisors, whose sum is σ = 320420423442. Its totient is φ = 320420423440.

The previous prime is 320420423431. The next prime is 320420423489. The reversal of 320420423441 is 144324024023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184130242816 + 136290180625 = 429104^2 + 369175^2 .

It is a cyclic number.

It is not a de Polignac number, because 320420423441 - 2¹⁴ = 320420407057 is a prime.

It is not a weakly prime, because it can be changed into another prime (320420423431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160210211720 + 160210211721.

It is an arithmetic number, because the mean of its divisors is an integer number (160210211721).

Almost surely, 2^320420423441 is an apocalyptic number.

It is an amenable number.

320420423441 is a deficient number, since it is larger than the sum of its proper divisors (1).

320420423441 is an equidigital number, since it uses as much as digits as its factorization.

320420423441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 320420423441 its reverse (144324024023), we get a palindrome (464744447464).

The spelling of 320420423441 in words is "three hundred twenty billion, four hundred twenty million, four hundred twenty-three thousand, four hundred forty-one".