130123181 has 2 divisors, whose sum is σ = 130123182. Its totient is φ = 130123180.

The previous prime is 130123171. The next prime is 130123199. The reversal of 130123181 is 181321031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121660900 + 8462281 = 11030^2 + 2909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130123181 is a prime.

It is a super-2 number, since 2×130123181² = 33864084467117522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130123141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65061590 + 65061591.

It is an arithmetic number, because the mean of its divisors is an integer number (65061591).

Almost surely, 2^130123181 is an apocalyptic number.

It is an amenable number.

130123181 is a deficient number, since it is larger than the sum of its proper divisors (1).

130123181 is an equidigital number, since it uses as much as digits as its factorization.

130123181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 130123181 is about 11407.1548161669. The cubic root of 130123181 is about 506.7396539495.

The spelling of 130123181 in words is "one hundred thirty million, one hundred twenty-three thousand, one hundred eighty-one".