1312113132 has 36 divisors (see below), whose sum is σ = 3618252456. Its totient is φ = 397609920.

The previous prime is 1312113109. The next prime is 1312113163. The reversal of 1312113132 is 2313112131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1656313 + ... + 1657104.

Almost surely, 2^1312113132 is an apocalyptic number.

1312113132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312113132 is an abundant number, since it is smaller than the sum of its proper divisors (2306139324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312113132 is a wasteful number, since it uses less digits than its factorization.

1312113132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313438 (or 3313433 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1312113132 is about 36223.1021863120. The cubic root of 1312113132 is about 1094.7722000636.

Adding to 1312113132 its reverse (2313112131), we get a palindrome (3625225263).

The spelling of 1312113132 in words is "one billion, three hundred twelve million, one hundred thirteen thousand, one hundred thirty-two".