131545205 has 16 divisors (see below), whose sum is σ = 175457664. Its totient is φ = 93862080.

The previous prime is 131545199. The next prime is 131545217. The reversal of 131545205 is 502545131.

It is not a de Polignac number, because 131545205 - 2¹⁶ = 131479669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19649 + ... + 25478.

It is an arithmetic number, because the mean of its divisors is an integer number (10966104).

Almost surely, 2^131545205 is an apocalyptic number.

It is an amenable number.

131545205 is a deficient number, since it is larger than the sum of its proper divisors (43912459).

131545205 is a wasteful number, since it uses less digits than its factorization.

131545205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45196.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 131545205 is about 11469.3158034819. The cubic root of 131545205 is about 508.5789029981.

The spelling of 131545205 in words is "one hundred thirty-one million, five hundred forty-five thousand, two hundred five".