2231613228 has 54 divisors (see below), whose sum is σ = 5643834924. Its totient is φ = 685995648.

The previous prime is 2231613221. The next prime is 2231613257. The reversal of 2231613228 is 8223161322.

It is a super-3 number, since 3×2231613228³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231613195 and 2231613204.

It is not an unprimeable number, because it can be changed into a prime (2231613221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2126848 + ... + 2127896.

Almost surely, 2^2231613228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231613228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821917462).

2231613228 is an abundant number, since it is smaller than the sum of its proper divisors (3412221696).

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

2231613228 is a wasteful number, since it uses less digits than its factorization.

2231613228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 1067 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 2231613228 is about 47239.9537256336. The cubic root of 2231613228 is about 1306.7915242634.

Multiplying 2231613228 by its product of digits (6912), we get a square (15424910631936 = 3927456²).

The spelling of 2231613228 in words is "two billion, two hundred thirty-one million, six hundred thirteen thousand, two hundred twenty-eight".