1312401322 has 16 divisors (see below), whose sum is σ = 2091528360. Its totient is φ = 616448448.

The previous prime is 1312401319. The next prime is 1312401353. The reversal of 1312401322 is 2231042131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1270138321 + 42263001 = 35639^2 + 6501^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312401322.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 303633 + ... + 307924.

Almost surely, 2^1312401322 is an apocalyptic number.

1312401322 is a deficient number, since it is larger than the sum of its proper divisors (779127038).

1312401322 is a wasteful number, since it uses less digits than its factorization.

1312401322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611625.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1312401322 is about 36227.0799540896. The cubic root of 1312401322 is about 1094.8523454151.

Adding to 1312401322 its reverse (2231042131), we get a palindrome (3543443453).

The spelling of 1312401322 in words is "one billion, three hundred twelve million, four hundred one thousand, three hundred twenty-two".