1312320012012 has 36 divisors (see below), whose sum is σ = 3373478002440. Its totient is φ = 430025765952.

The previous prime is 1312320011999. The next prime is 1312320012037. The reversal of 1312320012012 is 2102100232131.

1312320012012 is a `hidden beast` number, since 1 + 312 + 320 + 0 + 1 + 20 + 12 = 666.

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308924433 + ... + 308928680.

It is an arithmetic number, because the mean of its divisors is an integer number (93707722290).

Almost surely, 2^{1312320012012} is an apocalyptic number.

1312320012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312320012012 is an abundant number, since it is smaller than the sum of its proper divisors (2061157990428).

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

1312320012012 is a wasteful number, since it uses less digits than its factorization.

1312320012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617853182 (or 617853177 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312320012012 its reverse (2102100232131), we get a palindrome (3414420244143).

The spelling of 1312320012012 in words is "one trillion, three hundred twelve billion, three hundred twenty million, twelve thousand, twelve".