343031431 has 2 divisors, whose sum is σ = 343031432. Its totient is φ = 343031430.

The previous prime is 343031417. The next prime is 343031443. The reversal of 343031431 is 134130343.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (134130343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343031431 is a prime.

It is a super-2 number, since 2×343031431² = 235341125307815522, 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 (343031471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171515715 + 171515716.

It is an arithmetic number, because the mean of its divisors is an integer number (171515716).

Almost surely, 2^343031431 is an apocalyptic number.

343031431 is a deficient number, since it is larger than the sum of its proper divisors (1).

343031431 is an equidigital number, since it uses as much as digits as its factorization.

343031431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 343031431 is about 18521.1077152529. The cubic root of 343031431 is about 700.0213809796.

Adding to 343031431 its reverse (134130343), we get a palindrome (477161774).

The spelling of 343031431 in words is "three hundred forty-three million, thirty-one thousand, four hundred thirty-one".