1311226361056 has 24 divisors (see below), whose sum is σ = 2583479676960. Its totient is φ = 655104538368.

The previous prime is 1311226361051. The next prime is 1311226361059. The reversal of 1311226361056 is 6501636221131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311226361051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15853176 + ... + 15935671.

It is an arithmetic number, because the mean of its divisors is an integer number (107644986540).

Almost surely, 2^{1311226361056} is an apocalyptic number.

1311226361056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311226361056 is a deficient number, since it is larger than the sum of its proper divisors (1272253315904).

1311226361056 is a wasteful number, since it uses less digits than its factorization.

1311226361056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31790146 (or 31790138 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1311226361056 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, three hundred sixty-one thousand, fifty-six".