1312312132 has 12 divisors (see below), whose sum is σ = 2311175020. Its totient is φ = 651976416.

The previous prime is 1312312129. The next prime is 1312312139. The reversal of 1312312132 is 2312132131.

It can be written as a sum of positive squares in 2 ways, for example, as 372644416 + 939667716 = 19304^2 + 30654^2 .

It is not an unprimeable number, because it can be changed into a prime (1312312139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044207 + ... + 1045462.

Almost surely, 2^1312312132 is an apocalyptic number.

It is an amenable number.

1312312132 is a deficient number, since it is larger than the sum of its proper divisors (998862888).

1312312132 is a wasteful number, since it uses less digits than its factorization.

1312312132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089830 (or 2089828 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1312312132 is about 36225.8489479543. The cubic root of 1312312132 is about 1094.8275430189.

Adding to 1312312132 its reverse (2312132131), we get a palindrome (3624444263).

The spelling of 1312312132 in words is "one billion, three hundred twelve million, three hundred twelve thousand, one hundred thirty-two".