431221224231229 has 2 divisors, whose sum is σ = 431221224231230. Its totient is φ = 431221224231228.

The previous prime is 431221224231221. The next prime is 431221224231247. The reversal of 431221224231229 is 922132422122134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318204126328729 + 113017097902500 = 17838277^2 + 10630950^2 .

It is a cyclic number.

It is not a de Polignac number, because 431221224231229 - 2³ = 431221224231221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431221224231191 and 431221224231200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431221224231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215610612115614 + 215610612115615.

It is an arithmetic number, because the mean of its divisors is an integer number (215610612115615).

Almost surely, 2^{431221224231229} is an apocalyptic number.

It is an amenable number.

431221224231229 is a deficient number, since it is larger than the sum of its proper divisors (1).

431221224231229 is an equidigital number, since it uses as much as digits as its factorization.

431221224231229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The spelling of 431221224231229 in words is "four hundred thirty-one trillion, two hundred twenty-one billion, two hundred twenty-four million, two hundred thirty-one thousand, two hundred twenty-nine".