103241981 has 2 divisors, whose sum is σ = 103241982. Its totient is φ = 103241980.

The previous prime is 103241909. The next prime is 103241989. The reversal of 103241981 is 189142301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99002500 + 4239481 = 9950^2 + 2059^2 .

It is an emirp because it is prime and its reverse (189142301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103241981 is a prime.

It is a super-2 number, since 2×103241981² = 21317813281608722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103241989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51620990 + 51620991.

It is an arithmetic number, because the mean of its divisors is an integer number (51620991).

Almost surely, 2^103241981 is an apocalyptic number.

It is an amenable number.

103241981 is a deficient number, since it is larger than the sum of its proper divisors (1).

103241981 is an equidigital number, since it uses as much as digits as its factorization.

103241981 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 29.

The square root of 103241981 is about 10160.8061195950. The cubic root of 103241981 is about 469.1216142689.

The spelling of 103241981 in words is "one hundred three million, two hundred forty-one thousand, nine hundred eighty-one".