2231228520 has 96 divisors (see below), whose sum is σ = 7633173600. Its totient is φ = 563677056.

The previous prime is 2231228513. The next prime is 2231228567. The reversal of 2231228520 is 258221322.

2231228520 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231228520³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156262 + ... + 169941.

It is an arithmetic number, because the mean of its divisors is an integer number (79512225).

Almost surely, 2^2231228520 is an apocalyptic number.

2231228520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231228520 is an abundant number, since it is smaller than the sum of its proper divisors (5401945080).

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

2231228520 is a wasteful number, since it uses less digits than its factorization.

2231228520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326239 (or 326232 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2231228520 is about 47235.8817002499. The cubic root of 2231228520 is about 1306.7164273127.

Adding to 2231228520 its reverse (258221322), we get a palindrome (2489449842).

The spelling of 2231228520 in words is "two billion, two hundred thirty-one million, two hundred twenty-eight thousand, five hundred twenty".