1313023142421 has 24 divisors (see below), whose sum is σ = 1900999900800. Its totient is φ = 873313936416.

The previous prime is 1313023142371. The next prime is 1313023142441. The reversal of 1313023142421 is 1242413203131.

1313023142421 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 0 + 231 + 4 + 2 + 421 = 666.

It is not a de Polignac number, because 1313023142421 - 2²⁵ = 1312989587989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313023142441) 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 23 ways as a sum of consecutive naturals, for example, 16892755 + ... + 16970303.

It is an arithmetic number, because the mean of its divisors is an integer number (79208329200).

Almost surely, 2^{1313023142421} is an apocalyptic number.

It is an amenable number.

1313023142421 is a deficient number, since it is larger than the sum of its proper divisors (587976758379).

1313023142421 is a wasteful number, since it uses less digits than its factorization.

1313023142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81905 (or 81902 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1313023142421 its reverse (1242413203131), we get a palindrome (2555436345552).

It can be divided in two parts, 131302 and 3142421, that added together give a palindrome (3273723).

The spelling of 1313023142421 in words is "one trillion, three hundred thirteen billion, twenty-three million, one hundred forty-two thousand, four hundred twenty-one".