130991719 has 4 divisors (see below), whose sum is σ = 137886040. Its totient is φ = 124097400.

The previous prime is 130991701. The next prime is 130991813. The reversal of 130991719 is 917199031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130991719 - 2⁵ = 130991687 is a prime.

It is a super-2 number, since 2×130991719² = 34317660893149922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130991519) 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, 3447132 + ... + 3447169.

It is an arithmetic number, because the mean of its divisors is an integer number (34471510).

Almost surely, 2^130991719 is an apocalyptic number.

130991719 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

130991719 is a deficient number, since it is larger than the sum of its proper divisors (6894321).

130991719 is an equidigital number, since it uses as much as digits as its factorization.

130991719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894320.

The product of its (nonzero) digits is 15309, while the sum is 40.

The square root of 130991719 is about 11445.1613793777. The cubic root of 130991719 is about 507.8646060218.

The spelling of 130991719 in words is "one hundred thirty million, nine hundred ninety-one thousand, seven hundred nineteen".