130123091 has 4 divisors (see below), whose sum is σ = 148712112. Its totient is φ = 111534072.

The previous prime is 130123079. The next prime is 130123099. The reversal of 130123091 is 190321031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190321031 = 103 ⋅1847777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130123091 is a prime.

It is a super-2 number, since 2×130123091² = 33864037622788562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130123099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9294500 + ... + 9294513.

It is an arithmetic number, because the mean of its divisors is an integer number (37178028).

Almost surely, 2^130123091 is an apocalyptic number.

130123091 is a deficient number, since it is larger than the sum of its proper divisors (18589021).

130123091 is an equidigital number, since it uses as much as digits as its factorization.

130123091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18589020.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 130123091 is about 11407.1508712737. The cubic root of 130123091 is about 506.7395371202.

The spelling of 130123091 in words is "one hundred thirty million, one hundred twenty-three thousand, ninety-one".