203303312011 has 8 divisors (see below), whose sum is σ = 204286279824. Its totient is φ = 202322184960.

The previous prime is 203303311993. The next prime is 203303312027. The reversal of 203303312011 is 110213303302.

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

It is a cyclic number.

It is not a de Polignac number, because 203303312011 - 2²⁹ = 202766441099 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 203303312011.

It is not an unprimeable number, because it can be changed into a prime (203303312071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238510 + ... + 680803.

It is an arithmetic number, because the mean of its divisors is an integer number (25535784978).

Almost surely, 2^203303312011 is an apocalyptic number.

203303312011 is a deficient number, since it is larger than the sum of its proper divisors (982967813).

203303312011 is an equidigital number, since it uses as much as digits as its factorization.

203303312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920381.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203303312011 its reverse (110213303302), we get a palindrome (313516615313).

The spelling of 203303312011 in words is "two hundred three billion, three hundred three million, three hundred twelve thousand, eleven".