131423243233421 has 16 divisors (see below), whose sum is σ = 144358293705600. Its totient is φ = 119090239823808.

The previous prime is 131423243233397. The next prime is 131423243233441. The reversal of 131423243233421 is 124332342324131.

It is a cyclic number.

It is not a de Polignac number, because 131423243233421 - 2¹⁰ = 131423243232397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423243233441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16219595 + ... + 22932983.

It is an arithmetic number, because the mean of its divisors is an integer number (9022393356600).

Almost surely, 2^{131423243233421} is an apocalyptic number.

It is an amenable number.

131423243233421 is a deficient number, since it is larger than the sum of its proper divisors (12935050472179).

131423243233421 is a wasteful number, since it uses less digits than its factorization.

131423243233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758228.

The product of its digits is 248832, while the sum is 38.

Adding to 131423243233421 its reverse (124332342324131), we get a palindrome (255755585557552).

The spelling of 131423243233421 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, two hundred forty-three million, two hundred thirty-three thousand, four hundred twenty-one".