131000321010421 has 4 divisors (see below), whose sum is σ = 131867872805344. Its totient is φ = 130132769215500.

The previous prime is 131000321010407. The next prime is 131000321010443. The reversal of 131000321010421 is 124010123000131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131000321010421 - 2¹¹ = 131000321008373 is a prime.

It is a super-2 number, since 2×131000321010421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000321011421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433775897235 + ... + 433775897536.

It is an arithmetic number, because the mean of its divisors is an integer number (32966968201336).

Almost surely, 2^{131000321010421} is an apocalyptic number.

It is an amenable number.

131000321010421 is a deficient number, since it is larger than the sum of its proper divisors (867551794923).

131000321010421 is an equidigital number, since it uses as much as digits as its factorization.

131000321010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867551794922.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131000321010421 its reverse (124010123000131), we get a palindrome (255010444010552).

The spelling of 131000321010421 in words is "one hundred thirty-one trillion, three hundred twenty-one million, ten thousand, four hundred twenty-one".