343406401 has 4 divisors (see below), whose sum is σ = 369822292. Its totient is φ = 316990512.

The previous prime is 343406389. The next prime is 343406407. The reversal of 343406401 is 104604343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104604343 = 359 ⋅291377.

It can be written as a sum of positive squares in 2 ways, for example, as 17640000 + 325766401 = 4200^2 + 18049^2 .

It is a cyclic number.

It is not a de Polignac number, because 343406401 - 2⁵ = 343406369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343406407) 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 3 ways as a sum of consecutive naturals, for example, 13207926 + ... + 13207951.

It is an arithmetic number, because the mean of its divisors is an integer number (92455573).

Almost surely, 2^343406401 is an apocalyptic number.

It is an amenable number.

343406401 is a deficient number, since it is larger than the sum of its proper divisors (26415891).

343406401 is a wasteful number, since it uses less digits than its factorization.

343406401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26415890.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 343406401 is about 18531.2277251131. The cubic root of 343406401 is about 700.2763541486.

The spelling of 343406401 in words is "three hundred forty-three million, four hundred six thousand, four hundred one".