2212323231 has 4 divisors (see below), whose sum is σ = 2949764312. Its totient is φ = 1474882152.

The previous prime is 2212323143. The next prime is 2212323247. The reversal of 2212323231 is 1323232122.

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 2212323231 - 2¹⁰ = 2212322207 is a prime.

It is a super-2 number, since 2×2212323231² = 9788748156844558722, 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 = 2212323198 and 2212323207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212327231) 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, 368720536 + ... + 368720541.

It is an arithmetic number, because the mean of its divisors is an integer number (737441078).

Almost surely, 2^2212323231 is an apocalyptic number.

2212323231 is a deficient number, since it is larger than the sum of its proper divisors (737441081).

2212323231 is an equidigital number, since it uses as much as digits as its factorization.

2212323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737441080.

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

The square root of 2212323231 is about 47035.3402347639. The cubic root of 2212323231 is about 1303.0153340925.

Adding to 2212323231 its reverse (1323232122), we get a palindrome (3535555353).

It can be divided in two parts, 22123 and 23231, that added together give a palindrome (45354).

The spelling of 2212323231 in words is "two billion, two hundred twelve million, three hundred twenty-three thousand, two hundred thirty-one".