343643473 has 2 divisors, whose sum is σ = 343643474. Its totient is φ = 343643472.

The previous prime is 343643471. The next prime is 343643501. The reversal of 343643473 is 374346343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343620369 + 23104 = 18537^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 343643473 - 2¹ = 343643471 is a prime.

Together with 343643471, it forms a pair of twin primes.

It is equal to p_18480259 and since 343643473 and 18480259 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (343643471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171821736 + 171821737.

It is an arithmetic number, because the mean of its divisors is an integer number (171821737).

Almost surely, 2^343643473 is an apocalyptic number.

It is an amenable number.

343643473 is a deficient number, since it is larger than the sum of its proper divisors (1).

343643473 is an equidigital number, since it uses as much as digits as its factorization.

343643473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 37.

The square root of 343643473 is about 18537.6231755854. The cubic root of 343643473 is about 700.4374632861.

The spelling of 343643473 in words is "three hundred forty-three million, six hundred forty-three thousand, four hundred seventy-three".