20110345 has 4 divisors (see below), whose sum is σ = 24132420. Its totient is φ = 16088272.

The previous prime is 20110339. The next prime is 20110357. The reversal of 20110345 is 54301102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8874441 + 11235904 = 2979^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110345 - 2⁷ = 20110217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011030 + ... + 2011039.

It is an arithmetic number, because the mean of its divisors is an integer number (6033105).

Almost surely, 2^20110345 is an apocalyptic number.

It is an amenable number.

20110345 is a deficient number, since it is larger than the sum of its proper divisors (4022075).

20110345 is an equidigital number, since it uses as much as digits as its factorization.

20110345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022074.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20110345 is about 4484.4559313254. The cubic root of 20110345 is about 271.9400504053.

Adding to 20110345 its reverse (54301102), we get a palindrome (74411447).

The spelling of 20110345 in words is "twenty million, one hundred ten thousand, three hundred forty-five".