131662129 has 2 divisors, whose sum is σ = 131662130. Its totient is φ = 131662128.

The previous prime is 131662103. The next prime is 131662133. The reversal of 131662129 is 921266131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131629729 + 32400 = 11473^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 131662129 - 2¹⁹ = 131137841 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131662129.

It is not a weakly prime, because it can be changed into another prime (131662199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65831064 + 65831065.

It is an arithmetic number, because the mean of its divisors is an integer number (65831065).

Almost surely, 2^131662129 is an apocalyptic number.

It is an amenable number.

131662129 is a deficient number, since it is larger than the sum of its proper divisors (1).

131662129 is an equidigital number, since it uses as much as digits as its factorization.

131662129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 131662129 is about 11474.4119239288. The cubic root of 131662129 is about 508.7295418851.

The spelling of 131662129 in words is "one hundred thirty-one million, six hundred sixty-two thousand, one hundred twenty-nine".