131709132 has 96 divisors (see below), whose sum is σ = 377395200. Its totient is φ = 39511296.

The previous prime is 131709119. The next prime is 131709133. The reversal of 131709132 is 231907131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 131709096 and 131709105.

It is not an unprimeable number, because it can be changed into a prime (131709133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40669 + ... + 43787.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^131709132 is an apocalyptic number.

131709132 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 131709132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188697600).

131709132 is an abundant number, since it is smaller than the sum of its proper divisors (245686068).

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

131709132 is a wasteful number, since it uses less digits than its factorization.

131709132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172 (or 3164 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 131709132 is about 11476.4599071316. The cubic root of 131709132 is about 508.7900730085.

It can be divided in two parts, 131709 and 132, that added together give a triangular number (131841 = T₅₁₃).

The spelling of 131709132 in words is "one hundred thirty-one million, seven hundred nine thousand, one hundred thirty-two".