343402111 has 4 divisors (see below), whose sum is σ = 369817672. Its totient is φ = 316986552.

The previous prime is 343402109. The next prime is 343402117. The reversal of 343402111 is 111204343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111204343 = 89 ⋅1249487.

It is a cyclic number.

It is not a de Polignac number, because 343402111 - 2¹ = 343402109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343402117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13207761 + ... + 13207786.

It is an arithmetic number, because the mean of its divisors is an integer number (92454418).

Almost surely, 2^343402111 is an apocalyptic number.

343402111 is a deficient number, since it is larger than the sum of its proper divisors (26415561).

343402111 is a wasteful number, since it uses less digits than its factorization.

343402111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26415560.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 343402111 is about 18531.1119741909. Note that the first 3 decimals coincide. The cubic root of 343402111 is about 700.2734380721.

Adding to 343402111 its reverse (111204343), we get a palindrome (454606454).

The spelling of 343402111 in words is "three hundred forty-three million, four hundred two thousand, one hundred eleven".