131436705 has 8 divisors (see below), whose sum is σ = 210298752. Its totient is φ = 70099568.

The previous prime is 131436703. The next prime is 131436733. The reversal of 131436705 is 507634131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131436705 - 2¹ = 131436703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131436703) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4381209 + ... + 4381238.

It is an arithmetic number, because the mean of its divisors is an integer number (26287344).

Almost surely, 2^131436705 is an apocalyptic number.

131436705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131436705 is a deficient number, since it is larger than the sum of its proper divisors (78862047).

131436705 is an equidigital number, since it uses as much as digits as its factorization.

131436705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8762455.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 131436705 is about 11464.5848158579. The cubic root of 131436705 is about 508.4390372914.

The spelling of 131436705 in words is "one hundred thirty-one million, four hundred thirty-six thousand, seven hundred five".