1312155423361 has 8 divisors (see below), whose sum is σ = 1323831130920. Its totient is φ = 1300480833792.

The previous prime is 1312155423349. The next prime is 1312155423413. The reversal of 1312155423361 is 1633245512131.

It can be written as a sum of positive squares in 4 ways, for example, as 423613532736 + 888541890625 = 650856^2 + 942625^2 .

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 1312155423361 - 2⁷ = 1312155423233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312155423361.

It is not an unprimeable number, because it can be changed into a prime (1312155421361) 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, 2173635 + ... + 2710903.

It is an arithmetic number, because the mean of its divisors is an integer number (165478891365).

Almost surely, 2^{1312155423361} is an apocalyptic number.

It is an amenable number.

1312155423361 is a deficient number, since it is larger than the sum of its proper divisors (11675707559).

1312155423361 is a wasteful number, since it uses less digits than its factorization.

1312155423361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558995.

The product of its digits is 64800, while the sum is 37.

The spelling of 1312155423361 in words is "one trillion, three hundred twelve billion, one hundred fifty-five million, four hundred twenty-three thousand, three hundred sixty-one".