131649635 has 16 divisors (see below), whose sum is σ = 170535456. Its totient is φ = 96987648.

The previous prime is 131649593. The next prime is 131649671. The reversal of 131649635 is 536946131.

It is a cyclic number.

It is not a de Polignac number, because 131649635 - 2⁶ = 131649571 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28187 + ... + 32523.

It is an arithmetic number, because the mean of its divisors is an integer number (10658466).

Almost surely, 2^131649635 is an apocalyptic number.

131649635 is a deficient number, since it is larger than the sum of its proper divisors (38885821).

131649635 is a wasteful number, since it uses less digits than its factorization.

131649635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822.

The product of its digits is 58320, while the sum is 38.

The square root of 131649635 is about 11473.8674822398. The cubic root of 131649635 is about 508.7134495129.

The spelling of 131649635 in words is "one hundred thirty-one million, six hundred forty-nine thousand, six hundred thirty-five".