2116123723 has 8 divisors (see below), whose sum is σ = 2469883392. Its totient is φ = 1775228136.

The previous prime is 2116123679. The next prime is 2116123741. The reversal of 2116123723 is 3273216112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116123723 is a prime.

It is a super-2 number, since 2×2116123723² = 8955959222086761458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2116123691 and 2116123700.

It is not an unprimeable number, because it can be changed into a prime (2116123753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3215665 + ... + 3216322.

It is an arithmetic number, because the mean of its divisors is an integer number (308735424).

Almost surely, 2^2116123723 is an apocalyptic number.

2116123723 is a deficient number, since it is larger than the sum of its proper divisors (353759669).

2116123723 is an equidigital number, since it uses as much as digits as its factorization.

2116123723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432041.

The product of its digits is 3024, while the sum is 28.

The square root of 2116123723 is about 46001.3447955601. The cubic root of 2116123723 is about 1283.8482259229.

Adding to 2116123723 its reverse (3273216112), we get a palindrome (5389339835).

The spelling of 2116123723 in words is "two billion, one hundred sixteen million, one hundred twenty-three thousand, seven hundred twenty-three".