1312173294336 has 216 divisors, whose sum is σ = 3822670771920. Its totient is φ = 432851558400.

The previous prime is 1312173294283. The next prime is 1312173294337. The reversal of 1312173294336 is 6334923712131.

1312173294336 is a `hidden beast` number, since 1 + 3 + 1 + 21 + 7 + 3 + 294 + 336 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1312173294291 and 1312173294300.

It is not an unprimeable number, because it can be changed into a prime (1312173294337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243850366 + ... + 243855746.

It is an arithmetic number, because the mean of its divisors is an integer number (17697549870).

Almost surely, 2^{1312173294336} is an apocalyptic number.

1312173294336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312173294336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1911335385960).

1312173294336 is an abundant number, since it is smaller than the sum of its proper divisors (2510497477584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312173294336 is a wasteful number, since it uses less digits than its factorization.

1312173294336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483 (or 6466 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The spelling of 1312173294336 in words is "one trillion, three hundred twelve billion, one hundred seventy-three million, two hundred ninety-four thousand, three hundred thirty-six".