2271878123 has 2 divisors, whose sum is σ = 2271878124. Its totient is φ = 2271878122.

The previous prime is 2271878087. The next prime is 2271878137. The reversal of 2271878123 is 3218781722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2271878123 - 2¹² = 2271874027 is a prime.

It is a super-2 number, since 2×2271878123² = 10322860411532006258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2271878173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135939061 + 1135939062.

It is an arithmetic number, because the mean of its divisors is an integer number (1135939062).

Almost surely, 2^2271878123 is an apocalyptic number.

2271878123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271878123 is an equidigital number, since it uses as much as digits as its factorization.

2271878123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 41.

The square root of 2271878123 is about 47664.2226727763. Note that the first 3 decimals coincide. The cubic root of 2271878123 is about 1314.6041829904.

The spelling of 2271878123 in words is "two billion, two hundred seventy-one million, eight hundred seventy-eight thousand, one hundred twenty-three".