103661113 has 2 divisors, whose sum is σ = 103661114. Its totient is φ = 103661112.

The previous prime is 103661111. The next prime is 103661123. The reversal of 103661113 is 311166301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103286569 + 374544 = 10163^2 + 612^2 .

It is a cyclic number.

It is not a de Polignac number, because 103661113 - 2¹ = 103661111 is a prime.

Together with 103661111, it forms a pair of twin primes.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (103661111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51830556 + 51830557.

It is an arithmetic number, because the mean of its divisors is an integer number (51830557).

Almost surely, 2^103661113 is an apocalyptic number.

It is an amenable number.

103661113 is a deficient number, since it is larger than the sum of its proper divisors (1).

103661113 is an equidigital number, since it uses as much as digits as its factorization.

103661113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 103661113 is about 10181.4101675554. The cubic root of 103661113 is about 469.7555889328.

The spelling of 103661113 in words is "one hundred three million, six hundred sixty-one thousand, one hundred thirteen".