131535141 has 4 divisors (see below), whose sum is σ = 175380192. Its totient is φ = 87690092.

The previous prime is 131535133. The next prime is 131535167. The reversal of 131535141 is 141535131.

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: 141535131 = 3 ⋅47178377.

It is a cyclic number.

It is not a de Polignac number, because 131535141 - 2³ = 131535133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131535101) 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, 21922521 + ... + 21922526.

It is an arithmetic number, because the mean of its divisors is an integer number (43845048).

Almost surely, 2^131535141 is an apocalyptic number.

It is an amenable number.

131535141 is a deficient number, since it is larger than the sum of its proper divisors (43845051).

131535141 is an equidigital number, since it uses as much as digits as its factorization.

131535141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43845050.

The product of its digits is 900, while the sum is 24.

The square root of 131535141 is about 11468.8770592417. The cubic root of 131535141 is about 508.5659328848.

The spelling of 131535141 in words is "one hundred thirty-one million, five hundred thirty-five thousand, one hundred forty-one".