131098565 has 16 divisors (see below), whose sum is σ = 171954048. Its totient is φ = 95363136.

The previous prime is 131098559. The next prime is 131098567. The reversal of 131098565 is 565890131.

It is a cyclic number.

It is not a de Polignac number, because 131098565 - 2⁶ = 131098501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131098567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10697 + ... + 19406.

It is an arithmetic number, because the mean of its divisors is an integer number (10747128).

Almost surely, 2^131098565 is an apocalyptic number.

It is an amenable number.

131098565 is a deficient number, since it is larger than the sum of its proper divisors (40855483).

131098565 is a wasteful number, since it uses less digits than its factorization.

131098565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30188.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 131098565 is about 11449.8281646495. The cubic root of 131098565 is about 508.0026517831.

The spelling of 131098565 in words is "one hundred thirty-one million, ninety-eight thousand, five hundred sixty-five".