131387017 has 4 divisors (see below), whose sum is σ = 137099520. Its totient is φ = 125674516.

The previous prime is 131386987. The next prime is 131387029. The reversal of 131387017 is 710783131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131387017 - 2¹¹ = 131384969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131387017.

It is not an unprimeable number, because it can be changed into a prime (131387057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856217 + ... + 2856262.

It is an arithmetic number, because the mean of its divisors is an integer number (34274880).

Almost surely, 2^131387017 is an apocalyptic number.

It is an amenable number.

131387017 is a deficient number, since it is larger than the sum of its proper divisors (5712503).

131387017 is an equidigital number, since it uses as much as digits as its factorization.

131387017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5712502.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 131387017 is about 11462.4175896710. The cubic root of 131387017 is about 508.3749595462.

The spelling of 131387017 in words is "one hundred thirty-one million, three hundred eighty-seven thousand, seventeen".