340213073 has 2 divisors, whose sum is σ = 340213074. Its totient is φ = 340213072.

The previous prime is 340213067. The next prime is 340213151. The reversal of 340213073 is 370312043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283316224 + 56896849 = 16832^2 + 7543^2 .

It is an emirp because it is prime and its reverse (370312043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340213073 - 2¹⁶ = 340147537 is a prime.

It is not a weakly prime, because it can be changed into another prime (342213073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170106536 + 170106537.

It is an arithmetic number, because the mean of its divisors is an integer number (170106537).

Almost surely, 2^340213073 is an apocalyptic number.

It is an amenable number.

340213073 is a deficient number, since it is larger than the sum of its proper divisors (1).

340213073 is an equidigital number, since it uses as much as digits as its factorization.

340213073 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 340213073 is about 18444.8657625910. The cubic root of 340213073 is about 698.0989732479.

The spelling of 340213073 in words is "three hundred forty million, two hundred thirteen thousand, seventy-three".