1312431421653 has 48 divisors (see below), whose sum is σ = 2103783065280. Its totient is φ = 781687065600.

The previous prime is 1312431421649. The next prime is 1312431421733. The reversal of 1312431421653 is 3561241342131.

1312431421653 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 431 + 4 + 216 + 5 + 3 = 666.

It is not a de Polignac number, because 1312431421653 - 2² = 1312431421649 is a prime.

It is a super-2 number, since 2×1312431421653² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312431421603) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19598175 + ... + 19665027.

It is an arithmetic number, because the mean of its divisors is an integer number (43828813860).

Almost surely, 2^{1312431421653} is an apocalyptic number.

It is an amenable number.

1312431421653 is a deficient number, since it is larger than the sum of its proper divisors (791351643627).

1312431421653 is a wasteful number, since it uses less digits than its factorization.

1312431421653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70290 (or 70287 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 1312431421653 its reverse (3561241342131), we get a palindrome (4873672763784).

The spelling of 1312431421653 in words is "one trillion, three hundred twelve billion, four hundred thirty-one million, four hundred twenty-one thousand, six hundred fifty-three".