123031003 has 4 divisors (see below), whose sum is σ = 123152760. Its totient is φ = 122909248.

The previous prime is 123030959. The next prime is 123031081. The reversal of 123031003 is 300130321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123031003 - 2¹³ = 123022811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123031303) 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 3 ways as a sum of consecutive naturals, for example, 59350 + ... + 61387.

It is an arithmetic number, because the mean of its divisors is an integer number (30788190).

Almost surely, 2^123031003 is an apocalyptic number.

123031003 is a deficient number, since it is larger than the sum of its proper divisors (121757).

123031003 is a wasteful number, since it uses less digits than its factorization.

123031003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121756.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 123031003 is about 11091.9341415282. The cubic root of 123031003 is about 497.3607640455.

Adding to 123031003 its reverse (300130321), we get a palindrome (423161324).

The spelling of 123031003 in words is "one hundred twenty-three million, thirty-one thousand, three".