123103143 has 12 divisors (see below), whose sum is σ = 179577528. Its totient is φ = 81255600.

The previous prime is 123103111. The next prime is 123103151. The reversal of 123103143 is 341301321.

It is not a de Polignac number, because 123103143 - 2⁵ = 123103111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123103163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66805 + ... + 68622.

It is an arithmetic number, because the mean of its divisors is an integer number (14964794).

Almost surely, 2^123103143 is an apocalyptic number.

123103143 is a deficient number, since it is larger than the sum of its proper divisors (56474385).

123103143 is a wasteful number, since it uses less digits than its factorization.

123103143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135534 (or 135531 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 123103143 is about 11095.1855775377. The cubic root of 123103143 is about 497.4579552526.

Adding to 123103143 its reverse (341301321), we get a palindrome (464404464).

The spelling of 123103143 in words is "one hundred twenty-three million, one hundred three thousand, one hundred forty-three".