343402231 has 2 divisors, whose sum is σ = 343402232. Its totient is φ = 343402230.

The previous prime is 343402229. The next prime is 343402247. The reversal of 343402231 is 132204343.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343402231 - 2¹ = 343402229 is a prime.

It is a super-2 number, since 2×343402231² = 235850184511554722, which contains 22 as substring.

Together with 343402229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343402201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171701115 + 171701116.

It is an arithmetic number, because the mean of its divisors is an integer number (171701116).

Almost surely, 2^343402231 is an apocalyptic number.

343402231 is a deficient number, since it is larger than the sum of its proper divisors (1).

343402231 is an equidigital number, since it uses as much as digits as its factorization.

343402231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 343402231 is about 18531.1152119887. The cubic root of 343402231 is about 700.2735196410.

Adding to 343402231 its reverse (132204343), we get a palindrome (475606574).

The spelling of 343402231 in words is "three hundred forty-three million, four hundred two thousand, two hundred thirty-one".