345128234 has 16 divisors (see below), whose sum is σ = 577890720. Its totient is φ = 153227760.

The previous prime is 345128227. The next prime is 345128249. The reversal of 345128234 is 432821543.

It is a super-2 number, since 2×345128234² = 238226995807917512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345128234.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 181469 + ... + 183360.

It is an arithmetic number, because the mean of its divisors is an integer number (36118170).

Almost surely, 2^345128234 is an apocalyptic number.

345128234 is a deficient number, since it is larger than the sum of its proper divisors (232762486).

345128234 is a wasteful number, since it uses less digits than its factorization.

345128234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364885.

The product of its digits is 23040, while the sum is 32.

The square root of 345128234 is about 18577.6272435422. The cubic root of 345128234 is about 701.4447941367. Note that the first 3 decimals are identical.

Adding to 345128234 its reverse (432821543), we get a palindrome (777949777).

The spelling of 345128234 in words is "three hundred forty-five million, one hundred twenty-eight thousand, two hundred thirty-four".