343506138 has 16 divisors (see below), whose sum is σ = 688611456. Its totient is φ = 114235520.

The previous prime is 343506089. The next prime is 343506139. The reversal of 343506138 is 831605343.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 343506099 and 343506108.

It is not an unprimeable number, because it can be changed into a prime (343506139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63831 + ... + 69002.

It is an arithmetic number, because the mean of its divisors is an integer number (43038216).

Almost surely, 2^343506138 is an apocalyptic number.

343506138 is an abundant number, since it is smaller than the sum of its proper divisors (345105318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343506138 is a wasteful number, since it uses less digits than its factorization.

343506138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133269.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 343506138 is about 18533.9185818866. The cubic root of 343506138 is about 700.3441423455.

The spelling of 343506138 in words is "three hundred forty-three million, five hundred six thousand, one hundred thirty-eight".