131129 has 2 divisors, whose sum is σ = 131130. Its totient is φ = 131128.

The previous prime is 131113. The next prime is 131143. The reversal of 131129 is 921131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123904 + 7225 = 352^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 131129 - 2⁴ = 131113 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (131149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65564 + 65565.

It is an arithmetic number, because the mean of its divisors is an integer number (65565).

2¹³¹¹²⁹ is an apocalyptic number.

It is an amenable number.

131129 is a deficient number, since it is larger than the sum of its proper divisors (1).

131129 is an equidigital number, since it uses as much as digits as its factorization.

131129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 17.

The square root of 131129 is about 362.1173842831. The cubic root of 131129 is about 50.8041960285.

The spelling of 131129 in words is "one hundred thirty-one thousand, one hundred twenty-nine".