131079605 has 16 divisors (see below), whose sum is σ = 166871664. Its totient is φ = 98503680.

The previous prime is 131079589. The next prime is 131079643. The reversal of 131079605 is 506970131.

It can be written as a sum of positive squares in 8 ways, for example, as 3073009 + 128006596 = 1753^2 + 11314^2 .

It is not a de Polignac number, because 131079605 - 2⁴ = 131079589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55019 + ... + 57351.

It is an arithmetic number, because the mean of its divisors is an integer number (10429479).

Almost surely, 2^131079605 is an apocalyptic number.

It is an amenable number.

131079605 is a deficient number, since it is larger than the sum of its proper divisors (35792059).

131079605 is a wasteful number, since it uses less digits than its factorization.

131079605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 131079605 is about 11449.0001746877. Note that the first 3 decimals coincide. The cubic root of 131079605 is about 507.9781608091.

The spelling of 131079605 in words is "one hundred thirty-one million, seventy-nine thousand, six hundred five".