345503047 has 2 divisors, whose sum is σ = 345503048. Its totient is φ = 345503046.

The previous prime is 345503017. The next prime is 345503051. The reversal of 345503047 is 740305543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345503047 - 2¹¹ = 345500999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345503017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751523 + 172751524.

It is an arithmetic number, because the mean of its divisors is an integer number (172751524).

Almost surely, 2^345503047 is an apocalyptic number.

345503047 is a deficient number, since it is larger than the sum of its proper divisors (1).

345503047 is an equidigital number, since it uses as much as digits as its factorization.

345503047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 345503047 is about 18587.7122583711. The cubic root of 345503047 is about 701.6986278179.

The spelling of 345503047 in words is "three hundred forty-five million, five hundred three thousand, forty-seven".