1311217108156 has 12 divisors (see below), whose sum is σ = 2295099318960. Its totient is φ = 655474445600.

The previous prime is 1311217108129. The next prime is 1311217108163. The reversal of 1311217108156 is 6518017121131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 33505120 + ... + 33544231.

It is an arithmetic number, because the mean of its divisors is an integer number (191258276580).

Almost surely, 2^{1311217108156} is an apocalyptic number.

It is an amenable number.

1311217108156 is a deficient number, since it is larger than the sum of its proper divisors (983882210804).

1311217108156 is a wasteful number, since it uses less digits than its factorization.

1311217108156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67054244 (or 67054242 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 37.

The spelling of 1311217108156 in words is "one trillion, three hundred eleven billion, two hundred seventeen million, one hundred eight thousand, one hundred fifty-six".