345081019 has 2 divisors, whose sum is σ = 345081020. Its totient is φ = 345081018.

The previous prime is 345081017. The next prime is 345081041. The reversal of 345081019 is 910180543.

It is a weak prime.

It is an emirp because it is prime and its reverse (910180543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345081019 - 2¹ = 345081017 is a prime.

It is a super-3 number, since 3×345081019³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 345081017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (345081013) 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, 172540509 + 172540510.

It is an arithmetic number, because the mean of its divisors is an integer number (172540510).

Almost surely, 2^345081019 is an apocalyptic number.

345081019 is a deficient number, since it is larger than the sum of its proper divisors (1).

345081019 is an equidigital number, since it uses as much as digits as its factorization.

345081019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 345081019 is about 18576.3564511451. The cubic root of 345081019 is about 701.4128058078.

The spelling of 345081019 in words is "three hundred forty-five million, eighty-one thousand, nineteen".