1312243322 has 16 divisors (see below), whose sum is σ = 2231345760. Its totient is φ = 573774192.

The previous prime is 1312243319. The next prime is 1312243343. The reversal of 1312243322 is 2233422131.

It is a super-2 number, since 2×1312243322² = 3443965072267191368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327688 + ... + 1328675.

It is an arithmetic number, because the mean of its divisors is an integer number (139459110).

Almost surely, 2^1312243322 is an apocalyptic number.

1312243322 is a deficient number, since it is larger than the sum of its proper divisors (919102438).

1312243322 is a wasteful number, since it uses less digits than its factorization.

1312243322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656397.

The product of its digits is 1728, while the sum is 23.

The square root of 1312243322 is about 36224.8991993076. The cubic root of 1312243322 is about 1094.8084072259.

Adding to 1312243322 its reverse (2233422131), we get a palindrome (3545665453).

The spelling of 1312243322 in words is "one billion, three hundred twelve million, two hundred forty-three thousand, three hundred twenty-two".