400344100203 has 8 divisors (see below), whose sum is σ = 551011234816. Its totient is φ = 258286516200.

The previous prime is 400344100073. The next prime is 400344100271. The reversal of 400344100203 is 302001443004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400344100203 - 2²² = 400339905899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400344100203.

It is not an unprimeable number, because it can be changed into a prime (400344100703) 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 7 ways as a sum of consecutive naturals, for example, 2152387543 + ... + 2152387728.

It is an arithmetic number, because the mean of its divisors is an integer number (68876404352).

Almost surely, 2^400344100203 is an apocalyptic number.

400344100203 is a deficient number, since it is larger than the sum of its proper divisors (150667134613).

400344100203 is a wasteful number, since it uses less digits than its factorization.

400344100203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304775305.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 400344100203 its reverse (302001443004), we get a palindrome (702345543207).

The spelling of 400344100203 in words is "four hundred billion, three hundred forty-four million, one hundred thousand, two hundred three".