343673321 has 2 divisors, whose sum is σ = 343673322. Its totient is φ = 343673320.

The previous prime is 343673251. The next prime is 343673327. The reversal of 343673321 is 123376343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245266921 + 98406400 = 15661^2 + 9920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343673321 is a prime.

It is a super-2 number, since 2×343673321² = 236222703134338082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (343673327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171836660 + 171836661.

It is an arithmetic number, because the mean of its divisors is an integer number (171836661).

Almost surely, 2^343673321 is an apocalyptic number.

It is an amenable number.

343673321 is a deficient number, since it is larger than the sum of its proper divisors (1).

343673321 is an equidigital number, since it uses as much as digits as its factorization.

343673321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 32.

The square root of 343673321 is about 18538.4282235577. The cubic root of 343673321 is about 700.4577421059.

The spelling of 343673321 in words is "three hundred forty-three million, six hundred seventy-three thousand, three hundred twenty-one".