130231181 has 2 divisors, whose sum is σ = 130231182. Its totient is φ = 130231180.

The previous prime is 130231159. The next prime is 130231259. The reversal of 130231181 is 181132031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128618281 + 1612900 = 11341^2 + 1270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130231181 is a prime.

It is a super-2 number, since 2×130231181² = 33920321009309522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130231121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65115590 + 65115591.

It is an arithmetic number, because the mean of its divisors is an integer number (65115591).

Almost surely, 2^130231181 is an apocalyptic number.

It is an amenable number.

130231181 is a deficient number, since it is larger than the sum of its proper divisors (1).

130231181 is an equidigital number, since it uses as much as digits as its factorization.

130231181 is an odious number, because the sum of its binary digits is odd.

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

The square root of 130231181 is about 11411.8877053711. The cubic root of 130231181 is about 506.8798102437.

The spelling of 130231181 in words is "one hundred thirty million, two hundred thirty-one thousand, one hundred eighty-one".