131520055413 has 4 divisors (see below), whose sum is σ = 175360073888. Its totient is φ = 87680036940.

The previous prime is 131520055369. The next prime is 131520055487. The reversal of 131520055413 is 314550025131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314550025131 = 3 ⋅104850008377.

It is not a de Polignac number, because 131520055413 - 2¹⁸ = 131519793269 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 (131520055213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21920009233 + ... + 21920009238.

It is an arithmetic number, because the mean of its divisors is an integer number (43840018472).

Almost surely, 2^131520055413 is an apocalyptic number.

It is an amenable number.

131520055413 is a deficient number, since it is larger than the sum of its proper divisors (43840018475).

131520055413 is an equidigital number, since it uses as much as digits as its factorization.

131520055413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43840018474.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 131520055413 in words is "one hundred thirty-one billion, five hundred twenty million, fifty-five thousand, four hundred thirteen".