431201129 has 2 divisors, whose sum is σ = 431201130. Its totient is φ = 431201128.

The previous prime is 431201117. The next prime is 431201159. The reversal of 431201129 is 921102134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371602729 + 59598400 = 19277^2 + 7720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431201129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431201159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215600564 + 215600565.

It is an arithmetic number, because the mean of its divisors is an integer number (215600565).

Almost surely, 2^431201129 is an apocalyptic number.

It is an amenable number.

431201129 is a deficient number, since it is larger than the sum of its proper divisors (1).

431201129 is an equidigital number, since it uses as much as digits as its factorization.

431201129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 431201129 is about 20765.3829485517. The cubic root of 431201129 is about 755.4863635223.

The spelling of 431201129 in words is "four hundred thirty-one million, two hundred one thousand, one hundred twenty-nine".