1312031332 has 6 divisors (see below), whose sum is σ = 2296054838. Its totient is φ = 656015664.

The previous prime is 1312031323. The next prime is 1312031333. The reversal of 1312031332 is 2331302131.

It can be written as a sum of positive squares in only one way, i.e., 1176215616 + 135815716 = 34296^2 + 11654^2 .

It is a super-2 number, since 2×1312031332² = 3442852432299388448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312031333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164003913 + ... + 164003920.

Almost surely, 2^1312031332 is an apocalyptic number.

It is an amenable number.

1312031332 is a deficient number, since it is larger than the sum of its proper divisors (984023506).

1312031332 is a wasteful number, since it uses less digits than its factorization.

1312031332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328007837 (or 328007835 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1312031332 is about 36221.9730550394. The cubic root of 1312031332 is about 1094.7494494271.

Adding to 1312031332 its reverse (2331302131), we get a palindrome (3643333463).

The spelling of 1312031332 in words is "one billion, three hundred twelve million, thirty-one thousand, three hundred thirty-two".