131699611 has 4 divisors (see below), whose sum is σ = 132978352. Its totient is φ = 130420872.

The previous prime is 131699609. The next prime is 131699627. The reversal of 131699611 is 116996131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131699611 - 2¹ = 131699609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131699651) 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 3 ways as a sum of consecutive naturals, for example, 639216 + ... + 639421.

It is an arithmetic number, because the mean of its divisors is an integer number (33244588).

Almost surely, 2^131699611 is an apocalyptic number.

131699611 is a deficient number, since it is larger than the sum of its proper divisors (1278741).

131699611 is a wasteful number, since it uses less digits than its factorization.

131699611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278740.

The product of its digits is 8748, while the sum is 37.

The square root of 131699611 is about 11476.0450940208. The cubic root of 131699611 is about 508.7778128943. Note that the first 3 decimals are identical.

The spelling of 131699611 in words is "one hundred thirty-one million, six hundred ninety-nine thousand, six hundred eleven".