1231213322 has 8 divisors (see below), whose sum is σ = 1927116576. Its totient is φ = 588841132.

The previous prime is 1231213303. The next prime is 1231213327. The reversal of 1231213322 is 2233121321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1231213294 and 1231213303.

It is not an unprimeable number, because it can be changed into a prime (1231213327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13382708 + ... + 13382799.

It is an arithmetic number, because the mean of its divisors is an integer number (240889572).

Almost surely, 2^1231213322 is an apocalyptic number.

1231213322 is a deficient number, since it is larger than the sum of its proper divisors (695903254).

1231213322 is a wasteful number, since it uses less digits than its factorization.

1231213322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26765532.

The product of its digits is 432, while the sum is 20.

The square root of 1231213322 is about 35088.6494752933. The cubic root of 1231213322 is about 1071.7934583194.

Adding to 1231213322 its reverse (2233121321), we get a palindrome (3464334643).

The spelling of 1231213322 in words is "one billion, two hundred thirty-one million, two hundred thirteen thousand, three hundred twenty-two".