345665312 has 24 divisors (see below), whose sum is σ = 681236892. Its totient is φ = 172652800.

The previous prime is 345665303. The next prime is 345665317. The reversal of 345665312 is 213566543.

It can be written as a sum of positive squares in 2 ways, for example, as 339886096 + 5779216 = 18436^2 + 2404^2 .

It is not an unprimeable number, because it can be changed into a prime (345665317) 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 in 3 ways as a sum of consecutive naturals, for example, 28862 + ... + 39042.

Almost surely, 2^345665312 is an apocalyptic number.

345665312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345665312 is a deficient number, since it is larger than the sum of its proper divisors (335571580).

345665312 is a wasteful number, since it uses less digits than its factorization.

345665312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252 (or 11244 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 345665312 is about 18592.0765919249. The cubic root of 345665312 is about 701.8084612029.

The spelling of 345665312 in words is "three hundred forty-five million, six hundred sixty-five thousand, three hundred twelve".