343281377 has 2 divisors, whose sum is σ = 343281378. Its totient is φ = 343281376.

The previous prime is 343281353. The next prime is 343281413. The reversal of 343281377 is 773182343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203946961 + 139334416 = 14281^2 + 11804^2 .

It is an emirp because it is prime and its reverse (773182343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343281377 - 2⁶ = 343281313 is a prime.

It is a super-2 number, since 2×343281377² = 235684207590032258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343281377.

It is not a weakly prime, because it can be changed into another prime (343281077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171640688 + 171640689.

It is an arithmetic number, because the mean of its divisors is an integer number (171640689).

Almost surely, 2^343281377 is an apocalyptic number.

It is an amenable number.

343281377 is a deficient number, since it is larger than the sum of its proper divisors (1).

343281377 is an equidigital number, since it uses as much as digits as its factorization.

343281377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 343281377 is about 18527.8540851336. The cubic root of 343281377 is about 700.1913606077.

The spelling of 343281377 in words is "three hundred forty-three million, two hundred eighty-one thousand, three hundred seventy-seven".