340312073 has 2 divisors, whose sum is σ = 340312074. Its totient is φ = 340312072.

The previous prime is 340312033. The next prime is 340312081. The reversal of 340312073 is 370213043.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324288064 + 16024009 = 18008^2 + 4003^2 .

It is a cyclic number.

It is not a de Polignac number, because 340312073 - 2²⁰ = 339263497 is a prime.

It is not a weakly prime, because it can be changed into another prime (340312033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170156036 + 170156037.

It is an arithmetic number, because the mean of its divisors is an integer number (170156037).

Almost surely, 2^340312073 is an apocalyptic number.

It is an amenable number.

340312073 is a deficient number, since it is larger than the sum of its proper divisors (1).

340312073 is an equidigital number, since it uses as much as digits as its factorization.

340312073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 340312073 is about 18447.5492410239. The cubic root of 340312073 is about 698.1666809104.

The spelling of 340312073 in words is "three hundred forty million, three hundred twelve thousand, seventy-three".