2231423221 has 4 divisors (see below), whose sum is σ = 2232643744. Its totient is φ = 2230202700.

The previous prime is 2231423197. The next prime is 2231423267. The reversal of 2231423221 is 1223241322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2231423221 - 2¹⁵ = 2231390453 is a prime.

It is a super-3 number, since 3×2231423221³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231423192 and 2231423201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231423291) 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, 607515 + ... + 611176.

It is an arithmetic number, because the mean of its divisors is an integer number (558160936).

Almost surely, 2^2231423221 is an apocalyptic number.

It is an amenable number.

2231423221 is a deficient number, since it is larger than the sum of its proper divisors (1220523).

2231423221 is a wasteful number, since it uses less digits than its factorization.

2231423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220522.

The product of its digits is 1152, while the sum is 22.

The square root of 2231423221 is about 47237.9425991438. The cubic root of 2231423221 is about 1306.7544350131.

Adding to 2231423221 its reverse (1223241322), we get a palindrome (3454664543).

The spelling of 2231423221 in words is "two billion, two hundred thirty-one million, four hundred twenty-three thousand, two hundred twenty-one".