345112709 has 2 divisors, whose sum is σ = 345112710. Its totient is φ = 345112708.

The previous prime is 345112697. The next prime is 345112741. The reversal of 345112709 is 907211543.

It is an a-pointer prime, because the next prime (345112741) can be obtained adding 345112709 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181656484 + 163456225 = 13478^2 + 12785^2 .

It is a cyclic number.

It is not a de Polignac number, because 345112709 - 2²⁴ = 328335493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345112759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172556354 + 172556355.

It is an arithmetic number, because the mean of its divisors is an integer number (172556355).

Almost surely, 2^345112709 is an apocalyptic number.

It is an amenable number.

345112709 is a deficient number, since it is larger than the sum of its proper divisors (1).

345112709 is an equidigital number, since it uses as much as digits as its factorization.

345112709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 345112709 is about 18577.2093975387. The cubic root of 345112709 is about 701.4342762164.

The spelling of 345112709 in words is "three hundred forty-five million, one hundred twelve thousand, seven hundred nine".