23228691771 has 4 divisors (see below), whose sum is σ = 30971589032. Its totient is φ = 15485794512.

The previous prime is 23228691743. The next prime is 23228691779. The reversal of 23228691771 is 17719682232.

It is a happy number.

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

It is not a de Polignac number, because 23228691771 - 2¹⁰ = 23228690747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23228691771.

It is not an unprimeable number, because it can be changed into a prime (23228691779) 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, 3871448626 + ... + 3871448631.

It is an arithmetic number, because the mean of its divisors is an integer number (7742897258).

Almost surely, 2^23228691771 is an apocalyptic number.

23228691771 is a deficient number, since it is larger than the sum of its proper divisors (7742897261).

23228691771 is an equidigital number, since it uses as much as digits as its factorization.

23228691771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7742897260.

The product of its digits is 508032, while the sum is 48.

The spelling of 23228691771 in words is "twenty-three billion, two hundred twenty-eight million, six hundred ninety-one thousand, seven hundred seventy-one".