431933197 has 2 divisors, whose sum is σ = 431933198. Its totient is φ = 431933196.

The previous prime is 431933179. The next prime is 431933209. The reversal of 431933197 is 791339134.

Together with previous prime (431933179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419676196 + 12257001 = 20486^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 431933197 - 2¹⁹ = 431408909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431933147) 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, 215966598 + 215966599.

It is an arithmetic number, because the mean of its divisors is an integer number (215966599).

Almost surely, 2^431933197 is an apocalyptic number.

It is an amenable number.

431933197 is a deficient number, since it is larger than the sum of its proper divisors (1).

431933197 is an equidigital number, since it uses as much as digits as its factorization.

431933197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 431933197 is about 20783.0025982773. The cubic root of 431933197 is about 755.9136619533.

The spelling of 431933197 in words is "four hundred thirty-one million, nine hundred thirty-three thousand, one hundred ninety-seven".