131423443513440 has 96 divisors (see below), whose sum is σ = 445828758401376. Its totient is φ = 32350386094080.

The previous prime is 131423443513429. The next prime is 131423443513463. The reversal of 131423443513440 is 44315344324131.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×131423443513440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131423443513392 and 131423443513401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10530718401 + ... + 10530730880.

It is an arithmetic number, because the mean of its divisors is an integer number (4644049566681).

Almost surely, 2^{131423443513440} is an apocalyptic number.

131423443513440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131423443513440 is an abundant number, since it is smaller than the sum of its proper divisors (314405314887936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131423443513440 is a wasteful number, since it uses less digits than its factorization.

131423443513440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21061449312 (or 21061449304 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 131423443513440 its reverse (44315344324131), we get a palindrome (175738787837571).

The spelling of 131423443513440 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, four hundred forty-three million, five hundred thirteen thousand, four hundred forty".