431424197 has 2 divisors, whose sum is σ = 431424198. Its totient is φ = 431424196.

The previous prime is 431424193. The next prime is 431424209. The reversal of 431424197 is 791424134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353966596 + 77457601 = 18814^2 + 8801^2 .

It is a cyclic number.

It is not a de Polignac number, because 431424197 - 2² = 431424193 is a prime.

It is a super-2 number, since 2×431424197² = 372253675514189618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431424193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215712098 + 215712099.

It is an arithmetic number, because the mean of its divisors is an integer number (215712099).

Almost surely, 2^431424197 is an apocalyptic number.

It is an amenable number.

431424197 is a deficient number, since it is larger than the sum of its proper divisors (1).

431424197 is an equidigital number, since it uses as much as digits as its factorization.

431424197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 431424197 is about 20770.7534047275. The cubic root of 431424197 is about 755.6166165673.

The spelling of 431424197 in words is "four hundred thirty-one million, four hundred twenty-four thousand, one hundred ninety-seven".