1312120332 has 18 divisors (see below), whose sum is σ = 3316748708. Its totient is φ = 437373432.

The previous prime is 1312120331. The next prime is 1312120379. The reversal of 1312120332 is 2330212131.

1312120332 is a `hidden beast` number, since 1 + 312 + 1 + 20 + 332 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (1312120331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18223858 + ... + 18223929.

Almost surely, 2^1312120332 is an apocalyptic number.

1312120332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312120332 is an abundant number, since it is smaller than the sum of its proper divisors (2004628376).

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

1312120332 is a wasteful number, since it uses less digits than its factorization.

1312120332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36447797 (or 36447792 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1312120332 is about 36223.2015702643. The cubic root of 1312120332 is about 1094.7742025194.

Adding to 1312120332 its reverse (2330212131), we get a palindrome (3642332463).

The spelling of 1312120332 in words is "one billion, three hundred twelve million, one hundred twenty thousand, three hundred thirty-two".