340145473 has 2 divisors, whose sum is σ = 340145474. Its totient is φ = 340145472.

The previous prime is 340145431. The next prime is 340145483. The reversal of 340145473 is 374541043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207158449 + 132987024 = 14393^2 + 11532^2 .

It is a cyclic number.

It is not a de Polignac number, because 340145473 - 2²⁵ = 306591041 is a prime.

It is not a weakly prime, because it can be changed into another prime (340145483) 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, 170072736 + 170072737.

It is an arithmetic number, because the mean of its divisors is an integer number (170072737).

Almost surely, 2^340145473 is an apocalyptic number.

It is an amenable number.

340145473 is a deficient number, since it is larger than the sum of its proper divisors (1).

340145473 is an equidigital number, since it uses as much as digits as its factorization.

340145473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 340145473 is about 18443.0331832917. The cubic root of 340145473 is about 698.0527329941.

The spelling of 340145473 in words is "three hundred forty million, one hundred forty-five thousand, four hundred seventy-three".