345321269 has 2 divisors, whose sum is σ = 345321270. Its totient is φ = 345321268.

The previous prime is 345321239. The next prime is 345321313. The reversal of 345321269 is 962123543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227859025 + 117462244 = 15095^2 + 10838^2 .

It is a cyclic number.

It is not a de Polignac number, because 345321269 - 2⁸ = 345321013 is a prime.

It is a super-2 number, since 2×345321269² = 238493557647540722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345321239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172660634 + 172660635.

It is an arithmetic number, because the mean of its divisors is an integer number (172660635).

Almost surely, 2^345321269 is an apocalyptic number.

It is an amenable number.

345321269 is a deficient number, since it is larger than the sum of its proper divisors (1).

345321269 is an equidigital number, since it uses as much as digits as its factorization.

345321269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The square root of 345321269 is about 18582.8218793594. The cubic root of 345321269 is about 701.5755456912.

The spelling of 345321269 in words is "three hundred forty-five million, three hundred twenty-one thousand, two hundred sixty-nine".