343402331 has 4 divisors (see below), whose sum is σ = 343530000. Its totient is φ = 343274664.

The previous prime is 343402327. The next prime is 343402373. The reversal of 343402331 is 133204343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 343402331 - 2² = 343402327 is a prime.

It is a super-2 number, since 2×343402331² = 235850321872467122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343402297 and 343402306.

It is not an unprimeable number, because it can be changed into a prime (343402231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59711 + ... + 65208.

It is an arithmetic number, because the mean of its divisors is an integer number (85882500).

Almost surely, 2^343402331 is an apocalyptic number.

343402331 is a deficient number, since it is larger than the sum of its proper divisors (127669).

343402331 is a wasteful number, since it uses less digits than its factorization.

343402331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127668.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 343402331 is about 18531.1179101532. The cubic root of 343402331 is about 700.2735876151.

Adding to 343402331 its reverse (133204343), we get a palindrome (476606674).

The spelling of 343402331 in words is "three hundred forty-three million, four hundred two thousand, three hundred thirty-one".