220131089 has 2 divisors, whose sum is σ = 220131090.
Its totient is φ = 220131088.
The previous prime is 220131077. The next prime is 220131133. The reversal of 220131089 is 980131022.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 219780625 + 350464 = 14825^2 + 592^2
It is a cyclic number.
It is not a de Polignac number, because 220131089 - 24 = 220131073 is a prime.
It is not a weakly prime, because it can be changed into another prime (220131049) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065544 + 110065545.
It is an arithmetic number, because the mean of its divisors is an integer number (110065545).
Almost surely, 2220131089 is an apocalyptic number.
It is an amenable number.
220131089 is a deficient number, since it is larger than the sum of its proper divisors (1).
220131089 is an equidigital number, since it uses as much as digits as its factorization.
220131089 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 864, while the sum is 26.
The square root of 220131089 is about 14836.8153253992.
The cubic root of 220131089 is about 603.8009528245.
The spelling of 220131089 in words is "two hundred twenty million, one hundred thirty-one thousand, eighty-nine".