20112347 has 4 divisors (see below), whose sum is σ = 20580120. Its totient is φ = 19644576.

The previous prime is 20112331. The next prime is 20112361. The reversal of 20112347 is 74321102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112347 - 2⁴ = 20112331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233822 + ... + 233907.

It is an arithmetic number, because the mean of its divisors is an integer number (5145030).

Almost surely, 2^20112347 is an apocalyptic number.

20112347 is a deficient number, since it is larger than the sum of its proper divisors (467773).

20112347 is an equidigital number, since it uses as much as digits as its factorization.

20112347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467772.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20112347 is about 4484.6791412541. The cubic root of 20112347 is about 271.9490740515.

Adding to 20112347 its reverse (74321102), we get a palindrome (94433449).

The spelling of 20112347 in words is "twenty million, one hundred twelve thousand, three hundred forty-seven".