345678943 has 2 divisors, whose sum is σ = 345678944. Its totient is φ = 345678942.

The previous prime is 345678941. The next prime is 345678967. The reversal of 345678943 is 349876543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345678943 - 2¹ = 345678941 is a prime.

Together with 345678941, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345678941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172839471 + 172839472.

It is an arithmetic number, because the mean of its divisors is an integer number (172839472).

Almost surely, 2^345678943 is an apocalyptic number.

345678943 is a deficient number, since it is larger than the sum of its proper divisors (1).

345678943 is an equidigital number, since it uses as much as digits as its factorization.

345678943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 49.

The square root of 345678943 is about 18592.4431692018. The cubic root of 345678943 is about 701.8176861430.

The spelling of 345678943 in words is "three hundred forty-five million, six hundred seventy-eight thousand, nine hundred forty-three".