345021343 has 2 divisors, whose sum is σ = 345021344. Its totient is φ = 345021342.

The previous prime is 345021331. The next prime is 345021349. The reversal of 345021343 is 343120543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345021343 - 2⁵ = 345021311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345021349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172510671 + 172510672.

It is an arithmetic number, because the mean of its divisors is an integer number (172510672).

Almost surely, 2^345021343 is an apocalyptic number.

345021343 is a deficient number, since it is larger than the sum of its proper divisors (1).

345021343 is an equidigital number, since it uses as much as digits as its factorization.

345021343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 345021343 is about 18574.7501463681. The cubic root of 345021343 is about 701.3723709327.

Adding to 345021343 its reverse (343120543), we get a palindrome (688141886).

The spelling of 345021343 in words is "three hundred forty-five million, twenty-one thousand, three hundred forty-three".