101331089 has 2 divisors, whose sum is σ = 101331090. Its totient is φ = 101331088.

The previous prime is 101331079. The next prime is 101331127. The reversal of 101331089 is 980133101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54982225 + 46348864 = 7415^2 + 6808^2 .

It is an emirp because it is prime and its reverse (980133101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101331089 - 2¹⁶ = 101265553 is a prime.

It is not a weakly prime, because it can be changed into another prime (101331019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50665544 + 50665545.

It is an arithmetic number, because the mean of its divisors is an integer number (50665545).

Almost surely, 2^101331089 is an apocalyptic number.

It is an amenable number.

101331089 is a deficient number, since it is larger than the sum of its proper divisors (1).

101331089 is an equidigital number, since it uses as much as digits as its factorization.

101331089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 101331089 is about 10066.3344371226. The cubic root of 101331089 is about 466.2092685562.

The spelling of 101331089 in words is "one hundred one million, three hundred thirty-one thousand, eighty-nine".