1312481144 has 16 divisors (see below), whose sum is σ = 2650202520. Its totient is φ = 605760480.

The previous prime is 1312481143. The next prime is 1312481173. The reversal of 1312481144 is 4411842131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312481143) 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 3 ways as a sum of consecutive naturals, for example, 6309902 + ... + 6310109.

Almost surely, 2^1312481144 is an apocalyptic number.

It is an amenable number.

1312481144 is an abundant number, since it is smaller than the sum of its proper divisors (1337721376).

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

1312481144 is a wasteful number, since it uses less digits than its factorization.

1312481144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620030 (or 12620026 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 1312481144 is about 36228.1816270152. The cubic root of 1312481144 is about 1094.8745417587.

The spelling of 1312481144 in words is "one billion, three hundred twelve million, four hundred eighty-one thousand, one hundred forty-four".