130981 has 2 divisors, whose sum is σ = 130982. Its totient is φ = 130980.

The previous prime is 130973. The next prime is 130987. The reversal of 130981 is 189031.

130981 = T₂₉₄ + T₂₉₅ + T₂₉₆.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 58081 = 270^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 130981 - 2³ = 130973 is a prime.

It is a super-2 number, since 2×130981² = 34312044722, 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 (130987) 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 as a sum of consecutive naturals, namely, 65490 + 65491.

It is an arithmetic number, because the mean of its divisors is an integer number (65491).

2¹³⁰⁹⁸¹ is an apocalyptic number.

130981 is the 296-th centered triangular number.

It is an amenable number.

130981 is a deficient number, since it is larger than the sum of its proper divisors (1).

130981 is an equidigital number, since it uses as much as digits as its factorization.

130981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 130981 is about 361.9129729645. The cubic root of 130981 is about 50.7850752858.

It can be divided in two parts, 130 and 981, that added together give a palindrome (1111).

The spelling of 130981 in words is "one hundred thirty thousand, nine hundred eighty-one".