2231833221 has 24 divisors (see below), whose sum is σ = 3366230400. Its totient is φ = 1422221856.

The previous prime is 2231833217. The next prime is 2231833223. The reversal of 2231833221 is 1223381322.

It is a happy number.

2231833221 is a `hidden beast` number, since 22 + 318 + 3 + 322 + 1 = 666.

It is not a de Polignac number, because 2231833221 - 2² = 2231833217 is a prime.

It is a super-3 number, since 3×2231833221³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231833223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410680 + ... + 416078.

It is an arithmetic number, because the mean of its divisors is an integer number (140259600).

Almost surely, 2^2231833221 is an apocalyptic number.

It is an amenable number.

2231833221 is a deficient number, since it is larger than the sum of its proper divisors (1134397179).

2231833221 is a wasteful number, since it uses less digits than its factorization.

2231833221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425 (or 7422 counting only the distinct ones).

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

The square root of 2231833221 is about 47242.2821315821. The cubic root of 2231833221 is about 1306.8344641327.

The spelling of 2231833221 in words is "two billion, two hundred thirty-one million, eight hundred thirty-three thousand, two hundred twenty-one".