345047 has 2 divisors, whose sum is σ = 345048. Its totient is φ = 345046.

The previous prime is 345041. The next prime is 345067. The reversal of 345047 is 740543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345047 - 2⁸ = 344791 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345047.

It is not a weakly prime, because it can be changed into another prime (345041) 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, 172523 + 172524.

It is an arithmetic number, because the mean of its divisors is an integer number (172524).

2³⁴⁵⁰⁴⁷ is an apocalyptic number.

345047 is a deficient number, since it is larger than the sum of its proper divisors (1).

345047 is an equidigital number, since it uses as much as digits as its factorization.

345047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 345047 is about 587.4070139179. The cubic root of 345047 is about 70.1389756007.

The spelling of 345047 in words is "three hundred forty-five thousand, forty-seven".