340045081 has 2 divisors, whose sum is σ = 340045082. Its totient is φ = 340045080.

The previous prime is 340045073. The next prime is 340045091. The reversal of 340045081 is 180540043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264355081 + 75690000 = 16259^2 + 8700^2 .

It is a cyclic number.

It is not a de Polignac number, because 340045081 - 2³ = 340045073 is a prime.

It is a super-2 number, since 2×340045081² = 231261314224593122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340045091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170022540 + 170022541.

It is an arithmetic number, because the mean of its divisors is an integer number (170022541).

Almost surely, 2^340045081 is an apocalyptic number.

It is an amenable number.

340045081 is a deficient number, since it is larger than the sum of its proper divisors (1).

340045081 is an equidigital number, since it uses as much as digits as its factorization.

340045081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 340045081 is about 18440.3113043137. The cubic root of 340045081 is about 697.9840508065.

The spelling of 340045081 in words is "three hundred forty million, forty-five thousand, eighty-one".