103858981 has 2 divisors, whose sum is σ = 103858982. Its totient is φ = 103858980.

The previous prime is 103858969. The next prime is 103859003. The reversal of 103858981 is 189858301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103856481 + 2500 = 10191^2 + 50^2 .

It is an emirp because it is prime and its reverse (189858301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103858981 - 2¹⁵ = 103826213 is a prime.

It is a super-2 number, since 2×103858981² = 21573375868716722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103808981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51929490 + 51929491.

It is an arithmetic number, because the mean of its divisors is an integer number (51929491).

Almost surely, 2^103858981 is an apocalyptic number.

It is an amenable number.

103858981 is a deficient number, since it is larger than the sum of its proper divisors (1).

103858981 is an equidigital number, since it uses as much as digits as its factorization.

103858981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 103858981 is about 10191.1226565085. The cubic root of 103858981 is about 470.0542882817.

The spelling of 103858981 in words is "one hundred three million, eight hundred fifty-eight thousand, nine hundred eighty-one".