131015677 has 4 divisors (see below), whose sum is σ = 141093820. Its totient is φ = 120937536.

The previous prime is 131015663. The next prime is 131015681. The reversal of 131015677 is 776510131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 776510131 = 127 ⋅6114253.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 111070521 = 4466^2 + 10539^2 .

It is a cyclic number.

It is not a de Polignac number, because 131015677 - 2¹¹ = 131013629 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 (131015777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5039052 + ... + 5039077.

It is an arithmetic number, because the mean of its divisors is an integer number (35273455).

Almost surely, 2^131015677 is an apocalyptic number.

It is an amenable number.

131015677 is a deficient number, since it is larger than the sum of its proper divisors (10078143).

131015677 is a wasteful number, since it uses less digits than its factorization.

131015677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078142.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 131015677 is about 11446.2079746962. The cubic root of 131015677 is about 507.8955664484.

The spelling of 131015677 in words is "one hundred thirty-one million, fifteen thousand, six hundred seventy-seven".