343121401 has 16 divisors (see below), whose sum is σ = 400688640. Its totient is φ = 287743680.

The previous prime is 343121393. The next prime is 343121413. The reversal of 343121401 is 104121343.

It is not a de Polignac number, because 343121401 - 2³ = 343121393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343121491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82080 + ... + 86158.

It is an arithmetic number, because the mean of its divisors is an integer number (25043040).

Almost surely, 2^343121401 is an apocalyptic number.

It is an amenable number.

343121401 is a deficient number, since it is larger than the sum of its proper divisors (57567239).

343121401 is a wasteful number, since it uses less digits than its factorization.

343121401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344.

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

The square root of 343121401 is about 18523.5364064209. The cubic root of 343121401 is about 700.0825759728.

Adding to 343121401 its reverse (104121343), we get a palindrome (447242744).

The spelling of 343121401 in words is "three hundred forty-three million, one hundred twenty-one thousand, four hundred one".