1312130313240 has 128 divisors (see below), whose sum is σ = 3978154468800. Its totient is φ = 346193971200.

The previous prime is 1312130313229. The next prime is 1312130313253. The reversal of 1312130313240 is 423130312131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1312130313240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17573106 + ... + 17647614.

Almost surely, 2^{1312130313240} is an apocalyptic number.

1312130313240 is a gapful number since it is divisible by the number (10) 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 1312130313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1989077234400).

1312130313240 is an abundant number, since it is smaller than the sum of its proper divisors (2666024155560).

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

1312130313240 is a wasteful number, since it uses less digits than its factorization.

1312130313240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76077 (or 76073 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1312130313240 its reverse (423130312131), we get a palindrome (1735260625371).

The spelling of 1312130313240 in words is "one trillion, three hundred twelve billion, one hundred thirty million, three hundred thirteen thousand, two hundred forty".