343322281 has 2 divisors, whose sum is σ = 343322282. Its totient is φ = 343322280.

The previous prime is 343322269. The next prime is 343322321. The reversal of 343322281 is 182223343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334560681 + 8761600 = 18291^2 + 2960^2 .

It is an emirp because it is prime and its reverse (182223343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343322281 - 2¹³ = 343314089 is a prime.

It is a super-2 number, since 2×343322281² = 235740377262085922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (343322981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171661140 + 171661141.

It is an arithmetic number, because the mean of its divisors is an integer number (171661141).

Almost surely, 2^343322281 is an apocalyptic number.

It is an amenable number.

343322281 is a deficient number, since it is larger than the sum of its proper divisors (1).

343322281 is an equidigital number, since it uses as much as digits as its factorization.

343322281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 343322281 is about 18528.9579037786. The cubic root of 343322281 is about 700.2191701461.

It can be divided in two parts, 343 and 322281, that added together give a square (322624 = 568²).

The spelling of 343322281 in words is "three hundred forty-three million, three hundred twenty-two thousand, two hundred eighty-one".