343421155 has 48 divisors (see below), whose sum is σ = 531796320. Its totient is φ = 210470400.

The previous prime is 343421153. The next prime is 343421159. The reversal of 343421155 is 551124343.

It is not a de Polignac number, because 343421155 - 2¹ = 343421153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343421153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163351 + ... + 165439.

It is an arithmetic number, because the mean of its divisors is an integer number (11079090).

Almost surely, 2^343421155 is an apocalyptic number.

343421155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

343421155 is a deficient number, since it is larger than the sum of its proper divisors (188375165).

343421155 is a wasteful number, since it uses less digits than its factorization.

343421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2173 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 343421155 is about 18531.6258056329. The cubic root of 343421155 is about 700.2863828196.

Adding to 343421155 its reverse (551124343), we get a palindrome (894545498).

The spelling of 343421155 in words is "three hundred forty-three million, four hundred twenty-one thousand, one hundred fifty-five".