131022289 has 2 divisors, whose sum is σ = 131022290. Its totient is φ = 131022288.

The previous prime is 131022259. The next prime is 131022293. The reversal of 131022289 is 982220131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 13082689 = 10860^2 + 3617^2 .

It is a cyclic number.

It is not a de Polignac number, because 131022289 - 2¹³ = 131014097 is a prime.

It is not a weakly prime, because it can be changed into another prime (131022259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65511144 + 65511145.

It is an arithmetic number, because the mean of its divisors is an integer number (65511145).

Almost surely, 2^131022289 is an apocalyptic number.

It is an amenable number.

131022289 is a deficient number, since it is larger than the sum of its proper divisors (1).

131022289 is an equidigital number, since it uses as much as digits as its factorization.

131022289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 131022289 is about 11446.4968003315. The cubic root of 131022289 is about 507.9041103343.

The spelling of 131022289 in words is "one hundred thirty-one million, twenty-two thousand, two hundred eighty-nine".