340000081 has 2 divisors, whose sum is σ = 340000082. Its totient is φ = 340000080.

The previous prime is 340000061. The next prime is 340000127. The reversal of 340000081 is 180000043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295324225 + 44675856 = 17185^2 + 6684^2 .

It is a cyclic number.

It is not a de Polignac number, because 340000081 - 2¹³ = 339991889 is a prime.

It is a super-2 number, since 2×340000081² = 231200110160013122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340000061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170000040 + 170000041.

It is an arithmetic number, because the mean of its divisors is an integer number (170000041).

Almost surely, 2^340000081 is an apocalyptic number.

It is an amenable number.

340000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

340000081 is an equidigital number, since it uses as much as digits as its factorization.

340000081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 340000081 is about 18439.0911110065. The cubic root of 340000081 is about 697.9532601166.

The spelling of 340000081 in words is "three hundred forty million, eighty-one", and thus it is an aban number.