342036581 has 2 divisors, whose sum is σ = 342036582. Its totient is φ = 342036580.

The previous prime is 342036557. The next prime is 342036619. The reversal of 342036581 is 185630243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332734081 + 9302500 = 18241^2 + 3050^2 .

It is an emirp because it is prime and its reverse (185630243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342036581 - 2¹⁰ = 342035557 is a prime.

It is a super-2 number, since 2×342036581² = 233978045484339122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342036551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171018290 + 171018291.

It is an arithmetic number, because the mean of its divisors is an integer number (171018291).

Almost surely, 2^342036581 is an apocalyptic number.

It is an amenable number.

342036581 is a deficient number, since it is larger than the sum of its proper divisors (1).

342036581 is an equidigital number, since it uses as much as digits as its factorization.

342036581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 342036581 is about 18494.2310194287. The cubic root of 342036581 is about 699.3439983484.

The spelling of 342036581 in words is "three hundred forty-two million, thirty-six thousand, five hundred eighty-one".