343525321 has 2 divisors, whose sum is σ = 343525322. Its totient is φ = 343525320.

The previous prime is 343525289. The next prime is 343525327. The reversal of 343525321 is 123525343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291180096 + 52345225 = 17064^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 343525321 - 2⁵ = 343525289 is a prime.

It is equal to p_18474202 and since 343525321 and 18474202 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343525321.

It is not a weakly prime, because it can be changed into another prime (343525327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171762660 + 171762661.

It is an arithmetic number, because the mean of its divisors is an integer number (171762661).

Almost surely, 2^343525321 is an apocalyptic number.

It is an amenable number.

343525321 is a deficient number, since it is larger than the sum of its proper divisors (1).

343525321 is an equidigital number, since it uses as much as digits as its factorization.

343525321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 28.

The square root of 343525321 is about 18534.4360852981. The cubic root of 343525321 is about 700.3571789409.

The spelling of 343525321 in words is "three hundred forty-three million, five hundred twenty-five thousand, three hundred twenty-one".