345205027 has 2 divisors, whose sum is σ = 345205028. Its totient is φ = 345205026.

The previous prime is 345205019. The next prime is 345205033. The reversal of 345205027 is 720502543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345205027 - 2³ = 345205019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345204986 and 345205004.

It is not a weakly prime, because it can be changed into another prime (345205037) 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, 172602513 + 172602514.

It is an arithmetic number, because the mean of its divisors is an integer number (172602514).

Almost surely, 2^345205027 is an apocalyptic number.

345205027 is a deficient number, since it is larger than the sum of its proper divisors (1).

345205027 is an equidigital number, since it uses as much as digits as its factorization.

345205027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 345205027 is about 18579.6939425815. The cubic root of 345205027 is about 701.4968154340.

The spelling of 345205027 in words is "three hundred forty-five million, two hundred five thousand, twenty-seven".