3188661223 has 4 divisors (see below), whose sum is σ = 3478539528. Its totient is φ = 2898782920.

The previous prime is 3188661197. The next prime is 3188661227. The reversal of 3188661223 is 3221668813.

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

It is not a de Polignac number, because 3188661223 - 2⁹ = 3188660711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3188661227) 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, 144939136 + ... + 144939157.

It is an arithmetic number, because the mean of its divisors is an integer number (869634882).

Almost surely, 2^3188661223 is an apocalyptic number.

3188661223 is a deficient number, since it is larger than the sum of its proper divisors (289878305).

3188661223 is a wasteful number, since it uses less digits than its factorization.

3188661223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289878304.

The product of its digits is 82944, while the sum is 40.

The square root of 3188661223 is about 56468.2319804685. The cubic root of 3188661223 is about 1471.8700224846.

The spelling of 3188661223 in words is "three billion, one hundred eighty-eight million, six hundred sixty-one thousand, two hundred twenty-three".