123203101 has 12 divisors (see below), whose sum is σ = 143506620. Its totient is φ = 105463680.

The previous prime is 123203053. The next prime is 123203123. The reversal of 123203101 is 101302321.

It can be written as a sum of positive squares in 2 ways, for example, as 75951225 + 47251876 = 8715^2 + 6874^2 .

It is not a de Polignac number, because 123203101 - 2¹⁹ = 122678813 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 (123203701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56805 + ... + 58933.

It is an arithmetic number, because the mean of its divisors is an integer number (11958885).

Almost surely, 2^123203101 is an apocalyptic number.

It is an amenable number.

123203101 is a deficient number, since it is larger than the sum of its proper divisors (20303519).

123203101 is a wasteful number, since it uses less digits than its factorization.

123203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324 (or 3317 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123203101 is about 11099.6892298839. The cubic root of 123203101 is about 497.5925617527.

Adding to 123203101 its reverse (101302321), we get a palindrome (224505422).

The spelling of 123203101 in words is "one hundred twenty-three million, two hundred three thousand, one hundred one".