1312406565215 has 4 divisors (see below), whose sum is σ = 1574887878264. Its totient is φ = 1049925252168.

The previous prime is 1312406565187. The next prime is 1312406565221. The reversal of 1312406565215 is 5125656042131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312406565215 - 2²⁴ = 1312389787999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131240656517 + ... + 131240656526.

It is an arithmetic number, because the mean of its divisors is an integer number (393721969566).

Almost surely, 2^{1312406565215} is an apocalyptic number.

1312406565215 is a deficient number, since it is larger than the sum of its proper divisors (262481313049).

1312406565215 is an equidigital number, since it uses as much as digits as its factorization.

1312406565215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262481313048.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1312406565215 in words is "one trillion, three hundred twelve billion, four hundred six million, five hundred sixty-five thousand, two hundred fifteen".