131533501 has 8 divisors (see below), whose sum is σ = 144406944. Its totient is φ = 118812720.

The previous prime is 131533489. The next prime is 131533511. The reversal of 131533501 is 105335131.

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

It is a cyclic number.

It is not a de Polignac number, because 131533501 - 2¹³ = 131525309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131533511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36355 + ... + 39808.

It is an arithmetic number, because the mean of its divisors is an integer number (18050868).

Almost surely, 2^131533501 is an apocalyptic number.

131533501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131533501 is a deficient number, since it is larger than the sum of its proper divisors (12873443).

131533501 is a wasteful number, since it uses less digits than its factorization.

131533501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76331.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 131533501 is about 11468.8055611733. The cubic root of 131533501 is about 508.5638192504.

Adding to 131533501 its reverse (105335131), we get a palindrome (236868632).

The spelling of 131533501 in words is "one hundred thirty-one million, five hundred thirty-three thousand, five hundred one".