1312123322 has 8 divisors (see below), whose sum is σ = 1968338676. Its totient is φ = 656010432.

The previous prime is 1312123301. The next prime is 1312123327. The reversal of 1312123322 is 2233212131.

It can be written as a sum of positive squares in 2 ways, for example, as 1298953681 + 13169641 = 36041^2 + 3629^2 .

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

It is a super-2 number, since 2×1312123322² = 3443335224272631368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312123294 and 1312123303.

It is not an unprimeable number, because it can be changed into a prime (1312123327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37778 + ... + 63650.

Almost surely, 2^1312123322 is an apocalyptic number.

1312123322 is a deficient number, since it is larger than the sum of its proper divisors (656215354).

1312123322 is a wasteful number, since it uses less digits than its factorization.

1312123322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51232.

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

The square root of 1312123322 is about 36223.2428421311. The cubic root of 1312123322 is about 1094.7750340926.

Adding to 1312123322 its reverse (2233212131), we get a palindrome (3545335453).

The spelling of 1312123322 in words is "one billion, three hundred twelve million, one hundred twenty-three thousand, three hundred twenty-two".