2223213231 has 4 divisors (see below), whose sum is σ = 2964284312. Its totient is φ = 1482142152.

The previous prime is 2223213227. The next prime is 2223213241. The reversal of 2223213231 is 1323123222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2223213231 - 2² = 2223213227 is a prime.

It is a super-2 number, since 2×2223213231² = 9885354140986918722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2223213198 and 2223213207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223213211) 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, 370535536 + ... + 370535541.

It is an arithmetic number, because the mean of its divisors is an integer number (741071078).

Almost surely, 2^2223213231 is an apocalyptic number.

2223213231 is a deficient number, since it is larger than the sum of its proper divisors (741071081).

2223213231 is an equidigital number, since it uses as much as digits as its factorization.

2223213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741071080.

The product of its digits is 864, while the sum is 21.

The square root of 2223213231 is about 47150.9621428874. The cubic root of 2223213231 is about 1305.1498349707.

Adding to 2223213231 its reverse (1323123222), we get a palindrome (3546336453).

Subtracting from 2223213231 its reverse (1323123222), we obtain a palindrome (900090009).

The spelling of 2223213231 in words is "two billion, two hundred twenty-three million, two hundred thirteen thousand, two hundred thirty-one".