342321281 has 2 divisors, whose sum is σ = 342321282. Its totient is φ = 342321280.

The previous prime is 342321263. The next prime is 342321289. The reversal of 342321281 is 182123243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178890625 + 163430656 = 13375^2 + 12784^2 .

It is a cyclic number.

It is not a de Polignac number, because 342321281 - 2¹⁰ = 342320257 is a prime.

It is a super-2 number, since 2×342321281² = 234367718850961922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342321281.

It is not a weakly prime, because it can be changed into another prime (342321289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171160640 + 171160641.

It is an arithmetic number, because the mean of its divisors is an integer number (171160641).

Almost surely, 2^342321281 is an apocalyptic number.

It is an amenable number.

342321281 is a deficient number, since it is larger than the sum of its proper divisors (1).

342321281 is an equidigital number, since it uses as much as digits as its factorization.

342321281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 342321281 is about 18501.9264132144. The cubic root of 342321281 is about 699.5379815173.

The spelling of 342321281 in words is "three hundred forty-two million, three hundred twenty-one thousand, two hundred eighty-one".