1312352304240 has 80 divisors (see below), whose sum is σ = 4068494662176. Its totient is φ = 349943193600.

The previous prime is 1312352304217. The next prime is 1312352304317. The reversal of 1312352304240 is 424032532131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1312352304198 and 1312352304207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5116660 + ... + 5367020.

Almost surely, 2^{1312352304240} is an apocalyptic number.

1312352304240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312352304240 is an abundant number, since it is smaller than the sum of its proper divisors (2756142357936).

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

1312352304240 is a wasteful number, since it uses less digits than its factorization.

1312352304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272218 (or 272212 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1312352304240 its reverse (424032532131), we get a palindrome (1736384836371).

The spelling of 1312352304240 in words is "one trillion, three hundred twelve billion, three hundred fifty-two million, three hundred four thousand, two hundred forty".