131873017 has 4 divisors (see below), whose sum is σ = 131896720. Its totient is φ = 131849316.

The previous prime is 131872999. The next prime is 131873047. The reversal of 131873017 is 710378131.

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 131873017 - 2²³ = 123484409 is a prime.

It is a super-2 number, since 2×131873017² = 34780985225364578, which contains 22 as substring.

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 131873017.

It is not an unprimeable number, because it can be changed into a prime (131873047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1534 + ... + 16312.

It is an arithmetic number, because the mean of its divisors is an integer number (32974180).

Almost surely, 2^131873017 is an apocalyptic number.

It is an amenable number.

131873017 is a deficient number, since it is larger than the sum of its proper divisors (23703).

131873017 is an equidigital number, since it uses as much as digits as its factorization.

131873017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23702.

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

The square root of 131873017 is about 11483.5977376430. The cubic root of 131873017 is about 509.0010138379.

The spelling of 131873017 in words is "one hundred thirty-one million, eight hundred seventy-three thousand, seventeen".