1312347366 has 192 divisors, whose sum is σ = 3489004800. Its totient is φ = 364597200.

The previous prime is 1312347359. The next prime is 1312347371. The reversal of 1312347366 is 6637432131.

1312347366 is a `hidden beast` number, since 1 + 3 + 123 + 473 + 66 = 666.

1312347366 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1312347366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42333771 + ... + 42333801.

It is an arithmetic number, because the mean of its divisors is an integer number (18171900).

Almost surely, 2^1312347366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312347366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744502400).

1312347366 is an abundant number, since it is smaller than the sum of its proper divisors (2176657434).

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

1312347366 is a wasteful number, since it uses less digits than its factorization.

1312347366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 66 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 1312347366 is about 36226.3352548943. The cubic root of 1312347366 is about 1094.8373411981.

Adding to 1312347366 its reverse (6637432131), we get a palindrome (7949779497).

The spelling of 1312347366 in words is "one billion, three hundred twelve million, three hundred forty-seven thousand, three hundred sixty-six".