131165340 has 96 divisors (see below), whose sum is σ = 383545344. Its totient is φ = 33454080.

The previous prime is 131165327. The next prime is 131165357. The reversal of 131165340 is 43561131.

It is a self number, because there is not a number n which added to its sum of digits gives 131165340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180057 + ... + 180783.

It is an arithmetic number, because the mean of its divisors is an integer number (3995264).

Almost surely, 2^131165340 is an apocalyptic number.

131165340 is a gapful number since it is divisible by the number (10) 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 131165340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191772672).

131165340 is an abundant number, since it is smaller than the sum of its proper divisors (252380004).

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

131165340 is a wasteful number, since it uses less digits than its factorization.

131165340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 131165340 is about 11452.7437760565. The cubic root of 131165340 is about 508.0888874571.

The spelling of 131165340 in words is "one hundred thirty-one million, one hundred sixty-five thousand, three hundred forty".