343364621 has 2 divisors, whose sum is σ = 343364622. Its totient is φ = 343364620.

The previous prime is 343364617. The next prime is 343364629. The reversal of 343364621 is 126463343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343360900 + 3721 = 18530^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 343364621 - 2² = 343364617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343364629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171682310 + 171682311.

It is an arithmetic number, because the mean of its divisors is an integer number (171682311).

Almost surely, 2^343364621 is an apocalyptic number.

It is an amenable number.

343364621 is a deficient number, since it is larger than the sum of its proper divisors (1).

343364621 is an equidigital number, since it uses as much as digits as its factorization.

343364621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 343364621 is about 18530.1004044770. The cubic root of 343364621 is about 700.2479536562.

The spelling of 343364621 in words is "three hundred forty-three million, three hundred sixty-four thousand, six hundred twenty-one".