131043445251541 has 16 divisors (see below), whose sum is σ = 142185827755440. Its totient is φ = 120284718059520.

The previous prime is 131043445251461. The next prime is 131043445251547. The reversal of 131043445251541 is 145152544340131.

It can be written as a sum of positive squares in 8 ways, for example, as 6400287754641 + 124643157496900 = 2529879^2 + 11164370^2 .

It is not a de Polignac number, because 131043445251541 - 2³¹ = 131041297767893 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 (131043445251547) 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, 30912186 + ... + 34894843.

It is an arithmetic number, because the mean of its divisors is an integer number (8886614234715).

Almost surely, 2^{131043445251541} is an apocalyptic number.

It is an amenable number.

131043445251541 is a deficient number, since it is larger than the sum of its proper divisors (11142382503899).

131043445251541 is a wasteful number, since it uses less digits than its factorization.

131043445251541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65809944.

The product of its (nonzero) digits is 576000, while the sum is 43.

Adding to 131043445251541 its reverse (145152544340131), we get a palindrome (276195989591672).

The spelling of 131043445251541 in words is "one hundred thirty-one trillion, forty-three billion, four hundred forty-five million, two hundred fifty-one thousand, five hundred forty-one".