1312406565212 has 48 divisors (see below), whose sum is σ = 2495898316800. Its totient is φ = 601535263680.

The previous prime is 1312406565187. The next prime is 1312406565221. The reversal of 1312406565212 is 2125656042131.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20920589 + ... + 20983227.

It is an arithmetic number, because the mean of its divisors is an integer number (51997881600).

Almost surely, 2^{1312406565212} is an apocalyptic number.

It is an amenable number.

1312406565212 is a deficient number, since it is larger than the sum of its proper divisors (1183491751588).

1312406565212 is a wasteful number, since it uses less digits than its factorization.

1312406565212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71586 (or 71584 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 1312406565212 in words is "one trillion, three hundred twelve billion, four hundred six million, five hundred sixty-five thousand, two hundred twelve".