431001601 has 2 divisors, whose sum is σ = 431001602. Its totient is φ = 431001600.

The previous prime is 431001569. The next prime is 431001611. The reversal of 431001601 is 106100134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315417600 + 115584001 = 17760^2 + 10751^2 .

It is a cyclic number.

It is not a de Polignac number, because 431001601 - 2⁵ = 431001569 is a prime.

It is not a weakly prime, because it can be changed into another prime (431001611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215500800 + 215500801.

It is an arithmetic number, because the mean of its divisors is an integer number (215500801).

Almost surely, 2^431001601 is an apocalyptic number.

It is an amenable number.

431001601 is a deficient number, since it is larger than the sum of its proper divisors (1).

431001601 is an equidigital number, since it uses as much as digits as its factorization.

431001601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 431001601 is about 20760.5780507191. The cubic root of 431001601 is about 755.3698178011.

Adding to 431001601 its reverse (106100134), we get a palindrome (537101735).

The spelling of 431001601 in words is "four hundred thirty-one million, one thousand, six hundred one".