2263688281 has 4 divisors (see below), whose sum is σ = 2266387200. Its totient is φ = 2260989364.

The previous prime is 2263688257. The next prime is 2263688327. The reversal of 2263688281 is 1828863622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1828863622 = 2 ⋅914431811.

It is a cyclic number.

It is not a de Polignac number, because 2263688281 - 2⁷ = 2263688153 is a prime.

It is a super-2 number, since 2×2263688281² = 10248569267073469922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2263688081) 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, 1348201 + ... + 1349878.

It is an arithmetic number, because the mean of its divisors is an integer number (566596800).

Almost surely, 2^2263688281 is an apocalyptic number.

It is an amenable number.

2263688281 is a deficient number, since it is larger than the sum of its proper divisors (2698919).

2263688281 is an equidigital number, since it uses as much as digits as its factorization.

2263688281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698918.

The product of its digits is 442368, while the sum is 46.

The square root of 2263688281 is about 47578.2332690065. The cubic root of 2263688281 is about 1313.0226187332.

The spelling of 2263688281 in words is "two billion, two hundred sixty-three million, six hundred eighty-eight thousand, two hundred eighty-one".