320432401 has 2 divisors, whose sum is σ = 320432402. Its totient is φ = 320432400.

The previous prime is 320432393. The next prime is 320432429. The reversal of 320432401 is 104234023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170981776 + 149450625 = 13076^2 + 12225^2 .

It is an emirp because it is prime and its reverse (104234023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320432401 - 2³ = 320432393 is a prime.

It is a super-2 number, since 2×320432401² = 205353847221249602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320430401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160216200 + 160216201.

It is an arithmetic number, because the mean of its divisors is an integer number (160216201).

Almost surely, 2^320432401 is an apocalyptic number.

It is an amenable number.

320432401 is a deficient number, since it is larger than the sum of its proper divisors (1).

320432401 is an equidigital number, since it uses as much as digits as its factorization.

320432401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 320432401 is about 17900.6257153207. The cubic root of 320432401 is about 684.2983213883.

Adding to 320432401 its reverse (104234023), we get a palindrome (424666424).

The spelling of 320432401 in words is "three hundred twenty million, four hundred thirty-two thousand, four hundred one".