2331231228 has 18 divisors (see below), whose sum is σ = 5892834584. Its totient is φ = 777077064.

The previous prime is 2331231191. The next prime is 2331231229. The reversal of 2331231228 is 8221321332.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331231229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32378176 + ... + 32378247.

Almost surely, 2^2331231228 is an apocalyptic number.

It is an amenable number.

2331231228 is an abundant number, since it is smaller than the sum of its proper divisors (3561603356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2331231228 is a wasteful number, since it uses less digits than its factorization.

2331231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64756433 (or 64756428 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2331231228 is about 48282.8253937153. The cubic root of 2331231228 is about 1325.9539783240.

The spelling of 2331231228 in words is "two billion, three hundred thirty-one million, two hundred thirty-one thousand, two hundred twenty-eight".