1312111132 has 12 divisors (see below), whose sum is σ = 2298272760. Its totient is φ = 655461776.

The previous prime is 1312111127. The next prime is 1312111133. The reversal of 1312111132 is 2311112131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143458 + ... + 152329.

It is an arithmetic number, because the mean of its divisors is an integer number (191522730).

Almost surely, 2^1312111132 is an apocalyptic number.

It is an amenable number.

1312111132 is a deficient number, since it is larger than the sum of its proper divisors (986161628).

1312111132 is a wasteful number, since it uses less digits than its factorization.

1312111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296900 (or 296898 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 1312111132 is about 36223.0745796102. The cubic root of 1312111132 is about 1094.7716438246.

Adding to 1312111132 its reverse (2311112131), we get a palindrome (3623223263).

Subtracting 1312111132 from its reverse (2311112131), we obtain a palindrome (999000999).

The spelling of 1312111132 in words is "one billion, three hundred twelve million, one hundred eleven thousand, one hundred thirty-two".