109081013 has 2 divisors, whose sum is σ = 109081014. Its totient is φ = 109081012.

The previous prime is 109081009. The next prime is 109081057. The reversal of 109081013 is 310180901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60109009 + 48972004 = 7753^2 + 6998^2 .

It is an emirp because it is prime and its reverse (310180901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109081013 - 2² = 109081009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109081013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109081003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54540506 + 54540507.

It is an arithmetic number, because the mean of its divisors is an integer number (54540507).

Almost surely, 2^109081013 is an apocalyptic number.

It is an amenable number.

109081013 is a deficient number, since it is larger than the sum of its proper divisors (1).

109081013 is an equidigital number, since it uses as much as digits as its factorization.

109081013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 109081013 is about 10444.1856073128. The cubic root of 109081013 is about 477.8039335820.

The spelling of 109081013 in words is "one hundred nine million, eighty-one thousand, thirteen".