343655623 has 2 divisors, whose sum is σ = 343655624. Its totient is φ = 343655622.

The previous prime is 343655591. The next prime is 343655651. The reversal of 343655623 is 326556343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 343655623 - 2⁵ = 343655591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343655723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171827811 + 171827812.

It is an arithmetic number, because the mean of its divisors is an integer number (171827812).

Almost surely, 2^343655623 is an apocalyptic number.

343655623 is a deficient number, since it is larger than the sum of its proper divisors (1).

343655623 is an equidigital number, since it uses as much as digits as its factorization.

343655623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 37.

The square root of 343655623 is about 18537.9508846043. The cubic root of 343655623 is about 700.4457181739.

The spelling of 343655623 in words is "three hundred forty-three million, six hundred fifty-five thousand, six hundred twenty-three".