203440406001 has 32 divisors (see below), whose sum is σ = 314896896000. Its totient is φ = 114422468160.

The previous prime is 203440405967. The next prime is 203440406011. The reversal of 203440406001 is 100604044302.

It is not a de Polignac number, because 203440406001 - 2⁹ = 203440405489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203440406011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779215 + ... + 1007003.

It is an arithmetic number, because the mean of its divisors is an integer number (9840528000).

Almost surely, 2^203440406001 is an apocalyptic number.

203440406001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203440406001 is a deficient number, since it is larger than the sum of its proper divisors (111456489999).

203440406001 is a wasteful number, since it uses less digits than its factorization.

203440406001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228469.

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 203440406001 in words is "two hundred three billion, four hundred forty million, four hundred six thousand, one".