131566533 has 16 divisors (see below), whose sum is σ = 207396480. Its totient is φ = 72588096.

The previous prime is 131566531. The next prime is 131566549. The reversal of 131566533 is 335665131.

It is not a de Polignac number, because 131566533 - 2¹ = 131566531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131566494 and 131566503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131566531) 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 15 ways as a sum of consecutive naturals, for example, 107410 + ... + 108627.

It is an arithmetic number, because the mean of its divisors is an integer number (12962280).

Almost surely, 2^131566533 is an apocalyptic number.

It is an amenable number.

131566533 is a deficient number, since it is larger than the sum of its proper divisors (75829947).

131566533 is a wasteful number, since it uses less digits than its factorization.

131566533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216076.

The product of its digits is 24300, while the sum is 33.

The square root of 131566533 is about 11470.2455509897. The cubic root of 131566533 is about 508.6063875541.

The spelling of 131566533 in words is "one hundred thirty-one million, five hundred sixty-six thousand, five hundred thirty-three".