131100289 has 2 divisors, whose sum is σ = 131100290. Its totient is φ = 131100288.

The previous prime is 131100283. The next prime is 131100313. The reversal of 131100289 is 982001131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127509264 + 3591025 = 11292^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 131100289 - 2⁵ = 131100257 is a prime.

It is not a weakly prime, because it can be changed into another prime (131100283) 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, 65550144 + 65550145.

It is an arithmetic number, because the mean of its divisors is an integer number (65550145).

Almost surely, 2^131100289 is an apocalyptic number.

It is an amenable number.

131100289 is a deficient number, since it is larger than the sum of its proper divisors (1).

131100289 is an equidigital number, since it uses as much as digits as its factorization.

131100289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 131100289 is about 11449.9034493746. The cubic root of 131100289 is about 508.0048785879.

The spelling of 131100289 in words is "one hundred thirty-one million, one hundred thousand, two hundred eighty-nine".