354312305 has 4 divisors (see below), whose sum is σ = 425174772. Its totient is φ = 283449840.

The previous prime is 354312253. The next prime is 354312311. The reversal of 354312305 is 503213453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503213453 = 257 ⋅1958029.

It can be written as a sum of positive squares in 2 ways, for example, as 260919409 + 93392896 = 16153^2 + 9664^2 .

It is not a de Polignac number, because 354312305 - 2⁶ = 354312241 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 35431226 + ... + 35431235.

It is an arithmetic number, because the mean of its divisors is an integer number (106293693).

Almost surely, 2^354312305 is an apocalyptic number.

It is an amenable number.

354312305 is a deficient number, since it is larger than the sum of its proper divisors (70862467).

354312305 is an equidigital number, since it uses as much as digits as its factorization.

354312305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70862466.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 354312305 is about 18823.1853042996. The cubic root of 354312305 is about 707.6123625475.

Adding to 354312305 its reverse (503213453), we get a palindrome (857525758).

The spelling of 354312305 in words is "three hundred fifty-four million, three hundred twelve thousand, three hundred five".