131121304513549 has 8 divisors (see below), whose sum is σ = 149853372825920. Its totient is φ = 112389349546656.

The previous prime is 131121304513523. The next prime is 131121304513627. The reversal of 131121304513549 is 945315403121131.

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

It is not a de Polignac number, because 131121304513549 - 2²³ = 131121296124941 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 (131121304513649) 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, 25842819 + ... + 30497440.

It is an arithmetic number, because the mean of its divisors is an integer number (18731671603240).

Almost surely, 2^{131121304513549} is an apocalyptic number.

It is an amenable number.

131121304513549 is a deficient number, since it is larger than the sum of its proper divisors (18732068312371).

131121304513549 is an equidigital number, since it uses as much as digits as its factorization.

131121304513549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56672739.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 131121304513549 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred four million, five hundred thirteen thousand, five hundred forty-nine".