131561344541 has 8 divisors (see below), whose sum is σ = 144272890368. Its totient is φ = 118975036000.

The previous prime is 131561344483. The next prime is 131561344543. The reversal of 131561344541 is 145443165131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131561344541 - 2⁶ = 131561344477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131561344495 and 131561344504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131561344543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31307120 + ... + 31311321.

It is an arithmetic number, because the mean of its divisors is an integer number (18034111296).

Almost surely, 2^131561344541 is an apocalyptic number.

131561344541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131561344541 is a deficient number, since it is larger than the sum of its proper divisors (12711545827).

131561344541 is a wasteful number, since it uses less digits than its factorization.

131561344541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62618643.

The product of its digits is 86400, while the sum is 38.

The spelling of 131561344541 in words is "one hundred thirty-one billion, five hundred sixty-one million, three hundred forty-four thousand, five hundred forty-one".