130811591 has 4 divisors (see below), whose sum is σ = 130849632. Its totient is φ = 130773552.

The previous prime is 130811567. The next prime is 130811621. The reversal of 130811591 is 195118031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195118031 = 107 ⋅1823533.

It is a cyclic number.

It is not a de Polignac number, because 130811591 - 2¹⁰ = 130810567 is a prime.

It is a super-2 number, since 2×130811591² = 34223344679902562, 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 (130811521) 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, 13286 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (32712408).

Almost surely, 2^130811591 is an apocalyptic number.

130811591 is a deficient number, since it is larger than the sum of its proper divisors (38041).

130811591 is an equidigital number, since it uses as much as digits as its factorization.

130811591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38040.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 130811591 is about 11437.2894953306. The cubic root of 130811591 is about 507.6317093662.

The spelling of 130811591 in words is "one hundred thirty million, eight hundred eleven thousand, five hundred ninety-one".