131254523543 has 16 divisors (see below), whose sum is σ = 154243740672. Its totient is φ = 110113212000.

The previous prime is 131254523527. The next prime is 131254523611. The reversal of 131254523543 is 345325452131.

It is not a de Polignac number, because 131254523543 - 2⁴ = 131254523527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131254523497 and 131254523506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131254513543) 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, 399938 + ... + 649968.

It is an arithmetic number, because the mean of its divisors is an integer number (9640233792).

Almost surely, 2^131254523543 is an apocalyptic number.

131254523543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131254523543 is a deficient number, since it is larger than the sum of its proper divisors (22989217129).

131254523543 is a wasteful number, since it uses less digits than its factorization.

131254523543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253726.

The product of its digits is 216000, while the sum is 38.

Adding to 131254523543 its reverse (345325452131), we get a palindrome (476579975674).

The spelling of 131254523543 in words is "one hundred thirty-one billion, two hundred fifty-four million, five hundred twenty-three thousand, five hundred forty-three".