131046665 has 16 divisors (see below), whose sum is σ = 159900048. Its totient is φ = 103090176.

The previous prime is 131046649. The next prime is 131046673. The reversal of 131046665 is 566640131.

It can be written as a sum of positive squares in 8 ways, for example, as 21132409 + 109914256 = 4597^2 + 10484^2 .

It is a cyclic number.

It is not a de Polignac number, because 131046665 - 2⁴ = 131046649 is a prime.

It is a Duffinian 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, 76559 + ... + 78251.

It is an arithmetic number, because the mean of its divisors is an integer number (9993753).

Almost surely, 2^131046665 is an apocalyptic number.

It is an amenable number.

131046665 is a deficient number, since it is larger than the sum of its proper divisors (28853383).

131046665 is a wasteful number, since it uses less digits than its factorization.

131046665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 131046665 is about 11447.5615307366. The cubic root of 131046665 is about 507.9356060007.

Adding to 131046665 its reverse (566640131), we get a palindrome (697686796).

The spelling of 131046665 in words is "one hundred thirty-one million, forty-six thousand, six hundred sixty-five".