345969353 has 4 divisors (see below), whose sum is σ = 346017300. Its totient is φ = 345921408.

The previous prime is 345969311. The next prime is 345969359. The reversal of 345969353 is 353969543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 353969543 = 109 ⋅3247427.

It can be written as a sum of positive squares in 2 ways, for example, as 45050944 + 300918409 = 6712^2 + 17347^2 .

It is a cyclic number.

It is not a de Polignac number, because 345969353 - 2¹⁸ = 345707209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 345969298 and 345969307.

It is not an unprimeable number, because it can be changed into a prime (345969359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10700 + ... + 28397.

It is an arithmetic number, because the mean of its divisors is an integer number (86504325).

Almost surely, 2^345969353 is an apocalyptic number.

It is an amenable number.

345969353 is a deficient number, since it is larger than the sum of its proper divisors (47947).

345969353 is an equidigital number, since it uses as much as digits as its factorization.

345969353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47946.

The product of its digits is 1312200, while the sum is 47.

The square root of 345969353 is about 18600.2514230319. The cubic root of 345969353 is about 702.0141669422.

The spelling of 345969353 in words is "three hundred forty-five million, nine hundred sixty-nine thousand, three hundred fifty-three".