343440401 has 4 divisors (see below), whose sum is σ = 352722612. Its totient is φ = 334158192.

The previous prime is 343440373. The next prime is 343440437. The reversal of 343440401 is 104044343.

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

It can be written as a sum of positive squares in 2 ways, for example, as 236421376 + 107019025 = 15376^2 + 10345^2 .

It is a cyclic number.

It is not a de Polignac number, because 343440401 - 2²² = 339246097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343440481) 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 3 ways as a sum of consecutive naturals, for example, 4641050 + ... + 4641123.

It is an arithmetic number, because the mean of its divisors is an integer number (88180653).

Almost surely, 2^343440401 is an apocalyptic number.

It is an amenable number.

343440401 is a deficient number, since it is larger than the sum of its proper divisors (9282211).

343440401 is an equidigital number, since it uses as much as digits as its factorization.

343440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9282210.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 343440401 is about 18532.1450728187. The cubic root of 343440401 is about 700.2994643860.

Adding to 343440401 its reverse (104044343), we get a palindrome (447484744).

The spelling of 343440401 in words is "three hundred forty-three million, four hundred forty thousand, four hundred one".