131699712 has 88 divisors (see below), whose sum is σ = 359551456. Its totient is φ = 42835968.

The previous prime is 131699699. The next prime is 131699717. The reversal of 131699712 is 217996131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131699717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131598 + ... + 132594.

It is an arithmetic number, because the mean of its divisors is an integer number (4085812).

Almost surely, 2^131699712 is an apocalyptic number.

131699712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131699712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179775728).

131699712 is an abundant number, since it is smaller than the sum of its proper divisors (227851744).

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

131699712 is an equidigital number, since it uses as much as digits as its factorization.

131699712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1045 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 131699712 is about 11476.0494944907. The cubic root of 131699712 is about 508.7779429543. Note that the first 3 decimals are identical.

The spelling of 131699712 in words is "one hundred thirty-one million, six hundred ninety-nine thousand, seven hundred twelve".