1312707312 has 240 divisors, whose sum is σ = 4390340032. Its totient is φ = 358318080.

The previous prime is 1312707287. The next prime is 1312707337. The reversal of 1312707312 is 2137072131.

It is an interprime number because it is at equal distance from previous prime (1312707287) and next prime (1312707337).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2274768 + ... + 2275344.

Almost surely, 2^1312707312 is an apocalyptic number.

1312707312 is a gapful number since it is divisible by the number (12) 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 1312707312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2195170016).

1312707312 is an abundant number, since it is smaller than the sum of its proper divisors (3077632720).

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

1312707312 is a wasteful number, since it uses less digits than its factorization.

1312707312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 1312707312 is about 36231.3029299251. The cubic root of 1312707312 is about 1094.9374280877.

Adding to 1312707312 its reverse (2137072131), we get a palindrome (3449779443).

The spelling of 1312707312 in words is "one billion, three hundred twelve million, seven hundred seven thousand, three hundred twelve".