351305823 has 16 divisors (see below), whose sum is σ = 511660800. Its totient is φ = 212633280.

The previous prime is 351305821. The next prime is 351305837. The reversal of 351305823 is 328503153.

It is not a de Polignac number, because 351305823 - 2¹ = 351305821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351305821) 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 15 ways as a sum of consecutive naturals, for example, 20118 + ... + 33276.

It is an arithmetic number, because the mean of its divisors is an integer number (31978800).

Almost surely, 2^351305823 is an apocalyptic number.

351305823 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

351305823 is a deficient number, since it is larger than the sum of its proper divisors (160354977).

351305823 is a wasteful number, since it uses less digits than its factorization.

351305823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13982.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 351305823 is about 18743.1540302053. The cubic root of 351305823 is about 705.6052164254.

Adding to 351305823 its reverse (328503153), we get a palindrome (679808976).

The spelling of 351305823 in words is "three hundred fifty-one million, three hundred five thousand, eight hundred twenty-three".