343423931 has 2 divisors, whose sum is σ = 343423932. Its totient is φ = 343423930.

The previous prime is 343423907. The next prime is 343423943. The reversal of 343423931 is 139324343.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343423931 is a prime.

It is a super-2 number, since 2×343423931² = 235879992766985522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343423231) 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, 171711965 + 171711966.

It is an arithmetic number, because the mean of its divisors is an integer number (171711966).

Almost surely, 2^343423931 is an apocalyptic number.

343423931 is a deficient number, since it is larger than the sum of its proper divisors (1).

343423931 is an equidigital number, since it uses as much as digits as its factorization.

343423931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 343423931 is about 18531.7007044685. The cubic root of 343423931 is about 700.2882697056.

The spelling of 343423931 in words is "three hundred forty-three million, four hundred twenty-three thousand, nine hundred thirty-one".