431531441 has 4 divisors (see below), whose sum is σ = 470761584. Its totient is φ = 392301300.

The previous prime is 431531431. The next prime is 431531453. The reversal of 431531441 is 144135134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431531441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 431531441.

It is not an unprimeable number, because it can be changed into a prime (431531411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19615055 + ... + 19615076.

It is an arithmetic number, because the mean of its divisors is an integer number (117690396).

Almost surely, 2^431531441 is an apocalyptic number.

It is an amenable number.

431531441 is a deficient number, since it is larger than the sum of its proper divisors (39230143).

431531441 is a wasteful number, since it uses less digits than its factorization.

431531441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39230142.

The product of its digits is 2880, while the sum is 26.

The square root of 431531441 is about 20773.3348550492. The cubic root of 431531441 is about 755.6792221075.

Adding to 431531441 its reverse (144135134), we get a palindrome (575666575).

The spelling of 431531441 in words is "four hundred thirty-one million, five hundred thirty-one thousand, four hundred forty-one".