4001323003 has 4 divisors (see below), whose sum is σ = 4009539760. Its totient is φ = 3993106248.

The previous prime is 4001322991. The next prime is 4001323021. The reversal of 4001323003 is 3003231004.

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 4001323003 - 2⁵ = 4001322971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001323063) 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, 4107648 + ... + 4108621.

It is an arithmetic number, because the mean of its divisors is an integer number (1002384940).

Almost surely, 2^4001323003 is an apocalyptic number.

4001323003 is a deficient number, since it is larger than the sum of its proper divisors (8216757).

4001323003 is an equidigital number, since it uses as much as digits as its factorization.

4001323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8216756.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 4001323003 is about 63256.0115957369. The cubic root of 4001323003 is about 1587.5760440395.

Adding to 4001323003 its reverse (3003231004), we get a palindrome (7004554007).

The spelling of 4001323003 in words is "four billion, one million, three hundred twenty-three thousand, three".