1312231002012 has 72 divisors (see below), whose sum is σ = 3791256268800. Its totient is φ = 374886875808.

The previous prime is 1312231002011. The next prime is 1312231002037. The reversal of 1312231002012 is 2102001322131.

1312231002012 is a `hidden beast` number, since 131 + 22 + 310 + 0 + 201 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312231002011) 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 in 23 ways as a sum of consecutive naturals, for example, 2414289 + ... + 2907447.

Almost surely, 2^{1312231002012} is an apocalyptic number.

1312231002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312231002012 is an abundant number, since it is smaller than the sum of its proper divisors (2479025266788).

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

1312231002012 is a wasteful number, since it uses less digits than its factorization.

1312231002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503735 (or 503730 counting only the distinct ones).

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

Adding to 1312231002012 its reverse (2102001322131), we get a palindrome (3414232324143).

The spelling of 1312231002012 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, two thousand, twelve".