1312221032 has 16 divisors (see below), whose sum is σ = 2460891300. Its totient is φ = 655983360.

The previous prime is 1312221019. The next prime is 1312221049. The reversal of 1312221032 is 2301222131.

It can be written as a sum of positive squares in 2 ways, for example, as 1171419076 + 140801956 = 34226^2 + 11866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312221032.

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 3 ways as a sum of consecutive naturals, for example, 39194 + ... + 64502.

Almost surely, 2^1312221032 is an apocalyptic number.

It is an amenable number.

1312221032 is a deficient number, since it is larger than the sum of its proper divisors (1148670268).

1312221032 is a wasteful number, since it uses less digits than its factorization.

1312221032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31796 (or 31792 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1312221032 is about 36224.5915366895. The cubic root of 1312221032 is about 1094.8022083202.

Adding to 1312221032 its reverse (2301222131), we get a palindrome (3613443163).

The spelling of 1312221032 in words is "one billion, three hundred twelve million, two hundred twenty-one thousand, thirty-two".