101381089 has 2 divisors, whose sum is σ = 101381090. Its totient is φ = 101381088.

The previous prime is 101381087. The next prime is 101381101. The reversal of 101381089 is 980183101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100160064 + 1221025 = 10008^2 + 1105^2 .

It is an emirp because it is prime and its reverse (980183101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101381089 - 2¹ = 101381087 is a prime.

Together with 101381087, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 101381089.

It is not a weakly prime, because it can be changed into another prime (101381083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50690544 + 50690545.

It is an arithmetic number, because the mean of its divisors is an integer number (50690545).

Almost surely, 2^101381089 is an apocalyptic number.

It is an amenable number.

101381089 is a deficient number, since it is larger than the sum of its proper divisors (1).

101381089 is an equidigital number, since it uses as much as digits as its factorization.

101381089 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 31.

The square root of 101381089 is about 10068.8176565076. The cubic root of 101381089 is about 466.2859368017.

The spelling of 101381089 in words is "one hundred one million, three hundred eighty-one thousand, eighty-nine".