1312352316 has 72 divisors (see below), whose sum is σ = 3672998784. Its totient is φ = 391739040.

The previous prime is 1312352311. The next prime is 1312352351. The reversal of 1312352316 is 6132532131.

1312352316 is a `hidden beast` number, since 1 + 3 + 123 + 523 + 16 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1312352316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312352311) 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, 1801 + ... + 51263.

It is an arithmetic number, because the mean of its divisors is an integer number (51013872).

Almost surely, 2^1312352316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312352316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836499392).

1312352316 is an abundant number, since it is smaller than the sum of its proper divisors (2360646468).

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

1312352316 is a wasteful number, since it uses less digits than its factorization.

1312352316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49551 (or 49546 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 1312352316 is about 36226.4035752930. The cubic root of 1312352316 is about 1094.8387177234.

Adding to 1312352316 its reverse (6132532131), we get a palindrome (7444884447).

The spelling of 1312352316 in words is "one billion, three hundred twelve million, three hundred fifty-two thousand, three hundred sixteen".