342755981 has 2 divisors, whose sum is σ = 342755982. Its totient is φ = 342755980.

The previous prime is 342755969. The next prime is 342755993. The reversal of 342755981 is 189557243.

It is a balanced prime because it is at equal distance from previous prime (342755969) and next prime (342755993).

It can be written as a sum of positive squares in only one way, i.e., 229674025 + 113081956 = 15155^2 + 10634^2 .

It is a cyclic number.

It is not a de Polignac number, because 342755981 - 2¹⁴ = 342739597 is a prime.

It is a super-2 number, since 2×342755981² = 234963325022544722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342755681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171377990 + 171377991.

It is an arithmetic number, because the mean of its divisors is an integer number (171377991).

Almost surely, 2^342755981 is an apocalyptic number.

It is an amenable number.

342755981 is a deficient number, since it is larger than the sum of its proper divisors (1).

342755981 is an equidigital number, since it uses as much as digits as its factorization.

342755981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 342755981 is about 18513.6701115689. The cubic root of 342755981 is about 699.8339612993.

The spelling of 342755981 in words is "three hundred forty-two million, seven hundred fifty-five thousand, nine hundred eighty-one".