131351521 has 8 divisors (see below), whose sum is σ = 150241664. Its totient is φ = 112492800.

The previous prime is 131351513. The next prime is 131351531. The reversal of 131351521 is 125153131.

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

It is not a de Polignac number, because 131351521 - 2³ = 131351513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131351492 and 131351501.

It is not an unprimeable number, because it can be changed into a prime (131351501) 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, 1921 + ... + 16321.

It is an arithmetic number, because the mean of its divisors is an integer number (18780208).

Almost surely, 2^131351521 is an apocalyptic number.

It is an amenable number.

131351521 is a deficient number, since it is larger than the sum of its proper divisors (18890143).

131351521 is a wasteful number, since it uses less digits than its factorization.

131351521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15711.

The product of its digits is 450, while the sum is 22.

The square root of 131351521 is about 11460.8691206208. The cubic root of 131351521 is about 508.3291739395.

The spelling of 131351521 in words is "one hundred thirty-one million, three hundred fifty-one thousand, five hundred twenty-one".