123011003 has 4 divisors (see below), whose sum is σ = 125871768. Its totient is φ = 120150240.

The previous prime is 123010999. The next prime is 123011017. The reversal of 123011003 is 300110321.

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 123011003 - 2² = 123010999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123011023) 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, 1430318 + ... + 1430403.

It is an arithmetic number, because the mean of its divisors is an integer number (31467942).

Almost surely, 2^123011003 is an apocalyptic number.

123011003 is a deficient number, since it is larger than the sum of its proper divisors (2860765).

123011003 is an equidigital number, since it uses as much as digits as its factorization.

123011003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860764.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 123011003 is about 11091.0325488658. The cubic root of 123011003 is about 497.3338121551. Note that the first 3 decimals are identical.

Adding to 123011003 its reverse (300110321), we get a palindrome (423121324).

The spelling of 123011003 in words is "one hundred twenty-three million, eleven thousand, three".