131536633 has 8 divisors (see below), whose sum is σ = 140508648. Its totient is φ = 122701824.

The previous prime is 131536631. The next prime is 131536637. The reversal of 131536633 is 336635131.

It can be written as a sum of positive squares in 4 ways, for example, as 21609 + 131515024 = 147^2 + 11468^2 .

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 131536633 - 2¹ = 131536631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131536595 and 131536604.

It is not an unprimeable number, because it can be changed into a prime (131536631) 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, 32316 + ... + 36157.

It is an arithmetic number, because the mean of its divisors is an integer number (17563581).

Almost surely, 2^131536633 is an apocalyptic number.

It is an amenable number.

131536633 is a deficient number, since it is larger than the sum of its proper divisors (8972015).

131536633 is a wasteful number, since it uses less digits than its factorization.

131536633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68603.

The product of its digits is 14580, while the sum is 31.

The square root of 131536633 is about 11468.9421046581. The cubic root of 131536633 is about 508.5678557614.

The spelling of 131536633 in words is "one hundred thirty-one million, five hundred thirty-six thousand, six hundred thirty-three".