131021426543 has 16 divisors (see below), whose sum is σ = 150019153920. Its totient is φ = 112093953216.

The previous prime is 131021426533. The next prime is 131021426573. The reversal of 131021426543 is 345624120131.

It is not a de Polignac number, because 131021426543 - 2⁶ = 131021426479 is a prime.

It is a super-2 number, since 2×131021426543² (a number of 23 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 (131021426533) 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, 13246946 + ... + 13256832.

It is an arithmetic number, because the mean of its divisors is an integer number (9376197120).

Almost surely, 2^131021426543 is an apocalyptic number.

131021426543 is a deficient number, since it is larger than the sum of its proper divisors (18997727377).

131021426543 is an equidigital number, since it uses as much as digits as its factorization.

131021426543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 131021426543 its reverse (345624120131), we get a palindrome (476645546674).

The spelling of 131021426543 in words is "one hundred thirty-one billion, twenty-one million, four hundred twenty-six thousand, five hundred forty-three".