131632705 has 4 divisors (see below), whose sum is σ = 157959252. Its totient is φ = 105306160.

The previous prime is 131632687. The next prime is 131632747. The reversal of 131632705 is 507236131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49168144 + 82464561 = 7012^2 + 9081^2 .

It is not a de Polignac number, because 131632705 - 2¹¹ = 131630657 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 13163266 + ... + 13163275.

It is an arithmetic number, because the mean of its divisors is an integer number (39489813).

Almost surely, 2^131632705 is an apocalyptic number.

It is an amenable number.

131632705 is a deficient number, since it is larger than the sum of its proper divisors (26326547).

131632705 is an equidigital number, since it uses as much as digits as its factorization.

131632705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26326546.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 131632705 is about 11473.1296950745. The cubic root of 131632705 is about 508.6916419125.

Adding to 131632705 its reverse (507236131), we get a palindrome (638868836).

The spelling of 131632705 in words is "one hundred thirty-one million, six hundred thirty-two thousand, seven hundred five".