401603003 has 4 divisors (see below), whose sum is σ = 407104488. Its totient is φ = 396101520.

The previous prime is 401602987. The next prime is 401603009. The reversal of 401603003 is 300306104.

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 401603003 - 2⁴ = 401602987 is a prime.

It is a super-2 number, since 2×401603003² = 322569944037236018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401603009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750633 + ... + 2750778.

It is an arithmetic number, because the mean of its divisors is an integer number (101776122).

Almost surely, 2^401603003 is an apocalyptic number.

401603003 is a deficient number, since it is larger than the sum of its proper divisors (5501485).

401603003 is an equidigital number, since it uses as much as digits as its factorization.

401603003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501484.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 401603003 is about 20040.0350049594. The cubic root of 401603003 is about 737.7892401055.

Adding to 401603003 its reverse (300306104), we get a palindrome (701909107).

The spelling of 401603003 in words is "four hundred one million, six hundred three thousand, three".