431204197 has 2 divisors, whose sum is σ = 431204198. Its totient is φ = 431204196.

The previous prime is 431204177. The next prime is 431204209. The reversal of 431204197 is 791402134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364389921 + 66814276 = 19089^2 + 8174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431204197 is a prime.

It is equal to p_22908640 and since 431204197 and 22908640 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431204177) 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, 215602098 + 215602099.

It is an arithmetic number, because the mean of its divisors is an integer number (215602099).

Almost surely, 2^431204197 is an apocalyptic number.

It is an amenable number.

431204197 is a deficient number, since it is larger than the sum of its proper divisors (1).

431204197 is an equidigital number, since it uses as much as digits as its factorization.

431204197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 431204197 is about 20765.4568213656. The cubic root of 431204197 is about 755.4881552822.

The spelling of 431204197 in words is "four hundred thirty-one million, two hundred four thousand, one hundred ninety-seven".