431332104221 has 2 divisors, whose sum is σ = 431332104222. Its totient is φ = 431332104220.

The previous prime is 431332104209. The next prime is 431332104241. The reversal of 431332104221 is 122401233134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341143605625 + 90188498596 = 584075^2 + 300314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431332104221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431332104241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215666052110 + 215666052111.

It is an arithmetic number, because the mean of its divisors is an integer number (215666052111).

Almost surely, 2^431332104221 is an apocalyptic number.

It is an amenable number.

431332104221 is a deficient number, since it is larger than the sum of its proper divisors (1).

431332104221 is an equidigital number, since it uses as much as digits as its factorization.

431332104221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 431332104221 its reverse (122401233134), we get a palindrome (553733337355).

The spelling of 431332104221 in words is "four hundred thirty-one billion, three hundred thirty-two million, one hundred four thousand, two hundred twenty-one".