103661123 has 2 divisors, whose sum is σ = 103661124. Its totient is φ = 103661122.

The previous prime is 103661113. The next prime is 103661141. The reversal of 103661123 is 321166301.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321166301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103661123 - 2⁸ = 103660867 is a prime.

It is a super-2 number, since 2×103661123² = 21491256843242258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (103661113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51830561 + 51830562.

It is an arithmetic number, because the mean of its divisors is an integer number (51830562).

Almost surely, 2^103661123 is an apocalyptic number.

103661123 is a deficient number, since it is larger than the sum of its proper divisors (1).

103661123 is an equidigital number, since it uses as much as digits as its factorization.

103661123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 103661123 is about 10181.4106586465. The cubic root of 103661123 is about 469.7556040383.

The spelling of 103661123 in words is "one hundred three million, six hundred sixty-one thousand, one hundred twenty-three".