345286873 has 2 divisors, whose sum is σ = 345286874. Its totient is φ = 345286872.

The previous prime is 345286841. The next prime is 345286927. The reversal of 345286873 is 378682543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305445529 + 39841344 = 17477^2 + 6312^2 .

It is an emirp because it is prime and its reverse (378682543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345286873 - 2⁵ = 345286841 is a prime.

It is a super-2 number, since 2×345286873² = 238446049332236258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345286973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172643436 + 172643437.

It is an arithmetic number, because the mean of its divisors is an integer number (172643437).

Almost surely, 2^345286873 is an apocalyptic number.

It is an amenable number.

345286873 is a deficient number, since it is larger than the sum of its proper divisors (1).

345286873 is an equidigital number, since it uses as much as digits as its factorization.

345286873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 46.

The square root of 345286873 is about 18581.8963779266. The cubic root of 345286873 is about 701.5522512541.

The spelling of 345286873 in words is "three hundred forty-five million, two hundred eighty-six thousand, eight hundred seventy-three".