131699736 has 64 divisors (see below), whose sum is σ = 418099200. Its totient is φ = 37628064.

The previous prime is 131699719. The next prime is 131699779. The reversal of 131699736 is 637996131.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 131699691 and 131699700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42040 + ... + 45063.

It is an arithmetic number, because the mean of its divisors is an integer number (6532800).

Almost surely, 2^131699736 is an apocalyptic number.

It is an amenable number.

131699736 is an abundant number, since it is smaller than the sum of its proper divisors (286399464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131699736 is a wasteful number, since it uses less digits than its factorization.

131699736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87125 (or 87115 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 131699736 is about 11476.0505401466. The cubic root of 131699736 is about 508.7779738596. Note that the first 3 decimals are identical.

The spelling of 131699736 in words is "one hundred thirty-one million, six hundred ninety-nine thousand, seven hundred thirty-six".