1312234501440 has 112 divisors (see below), whose sum is σ = 4385625894720. Its totient is φ = 331511869440.

The previous prime is 1312234501393. The next prime is 1312234501477. The reversal of 1312234501440 is 441054322131.

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 = 1312234501398 and 1312234501407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35953101 + ... + 35989580.

It is an arithmetic number, because the mean of its divisors is an integer number (39157374060).

Almost surely, 2^{1312234501440} is an apocalyptic number.

1312234501440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312234501440 is an abundant number, since it is smaller than the sum of its proper divisors (3073391393280).

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

1312234501440 is a wasteful number, since it uses less digits than its factorization.

1312234501440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71942720 (or 71942710 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1312234501440 its reverse (441054322131), we get a palindrome (1753288823571).

The spelling of 1312234501440 in words is "one trillion, three hundred twelve billion, two hundred thirty-four million, five hundred one thousand, four hundred forty".