130817191 has 4 divisors (see below), whose sum is σ = 130840192. Its totient is φ = 130794192.

The previous prime is 130817177. The next prime is 130817201. The reversal of 130817191 is 191718031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 191718031 = 739 ⋅259429.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130817191 is a prime.

It is a super-2 number, since 2×130817191² = 34226274922260962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130817111) 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, 3955 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (32710048).

Almost surely, 2^130817191 is an apocalyptic number.

130817191 is a deficient number, since it is larger than the sum of its proper divisors (23001).

130817191 is a wasteful number, since it uses less digits than its factorization.

130817191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23000.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 130817191 is about 11437.5343059595. The cubic root of 130817191 is about 507.6389531102.

The spelling of 130817191 in words is "one hundred thirty million, eight hundred seventeen thousand, one hundred ninety-one".