431120401 has 4 divisors (see below), whose sum is σ = 431175204. Its totient is φ = 431065600.

The previous prime is 431120399. The next prime is 431120429. The reversal of 431120401 is 104021134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289034001 + 142086400 = 17001^2 + 11920^2 .

It is a cyclic number.

It is not a de Polignac number, because 431120401 - 2¹ = 431120399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431120471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13120 + ... + 32161.

It is an arithmetic number, because the mean of its divisors is an integer number (107793801).

Almost surely, 2^431120401 is an apocalyptic number.

It is an amenable number.

431120401 is a deficient number, since it is larger than the sum of its proper divisors (54803).

431120401 is an equidigital number, since it uses as much as digits as its factorization.

431120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54802.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 431120401 is about 20763.4390455917. The cubic root of 431120401 is about 755.4392140558.

Adding to 431120401 its reverse (104021134), we get a palindrome (535141535).

The spelling of 431120401 in words is "four hundred thirty-one million, one hundred twenty thousand, four hundred one".