131517473 has 4 divisors (see below), whose sum is σ = 137235648. Its totient is φ = 125799300.

The previous prime is 131517461. The next prime is 131517479. The reversal of 131517473 is 374715131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131517473 - 2⁶ = 131517409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131517479) 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, 2859053 + ... + 2859098.

It is an arithmetic number, because the mean of its divisors is an integer number (34308912).

Almost surely, 2^131517473 is an apocalyptic number.

It is an amenable number.

131517473 is a deficient number, since it is larger than the sum of its proper divisors (5718175).

131517473 is an equidigital number, since it uses as much as digits as its factorization.

131517473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718174.

The product of its digits is 8820, while the sum is 32.

The square root of 131517473 is about 11468.1067748779. The cubic root of 131517473 is about 508.5431614156.

The spelling of 131517473 in words is "one hundred thirty-one million, five hundred seventeen thousand, four hundred seventy-three".