1312123132 has 6 divisors (see below), whose sum is σ = 2296215488. Its totient is φ = 656061564.

The previous prime is 1312123093. The next prime is 1312123139. The reversal of 1312123132 is 2313212131.

It is a super-2 number, since 2×1312123132² = 3443334227058978848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312123139) by changing a digit.

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 as a sum of consecutive naturals, namely, 164015388 + ... + 164015395.

Almost surely, 2^1312123132 is an apocalyptic number.

It is an amenable number.

1312123132 is a deficient number, since it is larger than the sum of its proper divisors (984092356).

1312123132 is a wasteful number, since it uses less digits than its factorization.

1312123132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328030787 (or 328030785 counting only the distinct ones).

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

The square root of 1312123132 is about 36223.2402195055. The cubic root of 1312123132 is about 1094.7749812502.

Adding to 1312123132 its reverse (2313212131), we get a palindrome (3625335263).

The spelling of 1312123132 in words is "one billion, three hundred twelve million, one hundred twenty-three thousand, one hundred thirty-two".