1312240403144 has 32 divisors (see below), whose sum is σ = 2825398000800. Its totient is φ = 565079598720.

The previous prime is 1312240403141. The next prime is 1312240403147. The reversal of 1312240403144 is 4413040422131.

It is an interprime number because it is at equal distance from previous prime (1312240403141) and next prime (1312240403147).

It is not an unprimeable number, because it can be changed into a prime (1312240403141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392414717 + ... + 392418060.

It is an arithmetic number, because the mean of its divisors is an integer number (88293687525).

Almost surely, 2^{1312240403144} is an apocalyptic number.

It is an amenable number.

1312240403144 is an abundant number, since it is smaller than the sum of its proper divisors (1513157597656).

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

1312240403144 is a wasteful number, since it uses less digits than its factorization.

1312240403144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784832813 (or 784832809 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1312240403144 its reverse (4413040422131), we get a palindrome (5725280825275).

The spelling of 1312240403144 in words is "one trillion, three hundred twelve billion, two hundred forty million, four hundred three thousand, one hundred forty-four".