345400305 has 32 divisors (see below), whose sum is σ = 590986368. Its totient is φ = 171648000.

The previous prime is 345400283. The next prime is 345400313. The reversal of 345400305 is 503004543.

It is a happy number.

It is not a de Polignac number, because 345400305 - 2⁶ = 345400241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19050 + ... + 32460.

It is an arithmetic number, because the mean of its divisors is an integer number (18468324).

Almost surely, 2^345400305 is an apocalyptic number.

It is an amenable number.

345400305 is a deficient number, since it is larger than the sum of its proper divisors (245586063).

345400305 is a wasteful number, since it uses less digits than its factorization.

345400305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 345400305 is about 18584.9483453681. The cubic root of 345400305 is about 701.6290663785.

Adding to 345400305 its reverse (503004543), we get a palindrome (848404848).

The spelling of 345400305 in words is "three hundred forty-five million, four hundred thousand, three hundred five".