346203421 has 4 divisors (see below), whose sum is σ = 358141500. Its totient is φ = 334265344.

The previous prime is 346203401. The next prime is 346203433. The reversal of 346203421 is 124302643.

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 296218521 + 49984900 = 17211^2 + 7070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346203421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346203401) 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, 5968996 + ... + 5969053.

It is an arithmetic number, because the mean of its divisors is an integer number (89535375).

Almost surely, 2^346203421 is an apocalyptic number.

It is an amenable number.

346203421 is a deficient number, since it is larger than the sum of its proper divisors (11938079).

346203421 is a wasteful number, since it uses less digits than its factorization.

346203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938078.

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

The square root of 346203421 is about 18606.5424246419. The cubic root of 346203421 is about 702.1724487933.

The spelling of 346203421 in words is "three hundred forty-six million, two hundred three thousand, four hundred twenty-one".