203203013240009 has 4 divisors (see below), whose sum is σ = 206235894034704. Its totient is φ = 200170132445316.

The previous prime is 203203013239969. The next prime is 203203013240047. The reversal of 203203013240009 is 900042310302302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203203013240009 - 2³² = 203198718272713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203203019240009) 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, 1516440397247 + ... + 1516440397380.

It is an arithmetic number, because the mean of its divisors is an integer number (51558973508676).

Almost surely, 2^{203203013240009} is an apocalyptic number.

It is an amenable number.

203203013240009 is a deficient number, since it is larger than the sum of its proper divisors (3032880794695).

203203013240009 is an equidigital number, since it uses as much as digits as its factorization.

203203013240009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032880794694.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 203203013240009 in words is "two hundred three trillion, two hundred three billion, thirteen million, two hundred forty thousand, nine".