431666117 has 2 divisors, whose sum is σ = 431666118. Its totient is φ = 431666116.

The previous prime is 431666101. The next prime is 431666143. The reversal of 431666117 is 711666134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298632961 + 133033156 = 17281^2 + 11534^2 .

It is a cyclic number.

It is not a de Polignac number, because 431666117 - 2⁴ = 431666101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431666167) 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, 215833058 + 215833059.

It is an arithmetic number, because the mean of its divisors is an integer number (215833059).

Almost surely, 2^431666117 is an apocalyptic number.

It is an amenable number.

431666117 is a deficient number, since it is larger than the sum of its proper divisors (1).

431666117 is an equidigital number, since it uses as much as digits as its factorization.

431666117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 431666117 is about 20776.5761616297. The cubic root of 431666117 is about 755.7578268624.

The spelling of 431666117 in words is "four hundred thirty-one million, six hundred sixty-six thousand, one hundred seventeen".