1312666245631 has 8 divisors (see below), whose sum is σ = 1413649488384. Its totient is φ = 1211684276640.

The previous prime is 1312666245581. The next prime is 1312666245647. The reversal of 1312666245631 is 1365426662131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312666245631 - 2²⁵ = 1312632691199 is a prime.

It is a super-2 number, since 2×1312666245631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312666245931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701826 + ... + 4040896.

It is an arithmetic number, because the mean of its divisors is an integer number (176706186048).

Almost surely, 2^{1312666245631} is an apocalyptic number.

1312666245631 is a deficient number, since it is larger than the sum of its proper divisors (100983242753).

1312666245631 is a wasteful number, since it uses less digits than its factorization.

1312666245631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636881.

The product of its digits is 933120, while the sum is 46.

The spelling of 1312666245631 in words is "one trillion, three hundred twelve billion, six hundred sixty-six million, two hundred forty-five thousand, six hundred thirty-one".