123115303 has 4 divisors (see below), whose sum is σ = 124801888. Its totient is φ = 121428720.

The previous prime is 123115271. The next prime is 123115313. The reversal of 123115303 is 303511321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303511321 = 3929 ⋅77249.

It is a cyclic number.

It is not a de Polignac number, because 123115303 - 2⁵ = 123115271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123115313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843183 + ... + 843328.

It is an arithmetic number, because the mean of its divisors is an integer number (31200472).

Almost surely, 2^123115303 is an apocalyptic number.

123115303 is a deficient number, since it is larger than the sum of its proper divisors (1686585).

123115303 is an equidigital number, since it uses as much as digits as its factorization.

123115303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686584.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 123115303 is about 11095.7335494324. The cubic root of 123115303 is about 497.4743341725.

Adding to 123115303 its reverse (303511321), we get a palindrome (426626624).

The spelling of 123115303 in words is "one hundred twenty-three million, one hundred fifteen thousand, three hundred three".