203312011 has 16 divisors (see below), whose sum is σ = 241286400. Its totient is φ = 167616288.

The previous prime is 203311991. The next prime is 203312033. The reversal of 203312011 is 110213302.

203312011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203312011 - 2⁹ = 203311499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203311982 and 203312000.

It is not an unprimeable number, because it can be changed into a prime (203312311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55680 + ... + 59218.

It is an arithmetic number, because the mean of its divisors is an integer number (15080400).

Almost surely, 2^203312011 is an apocalyptic number.

203312011 is a deficient number, since it is larger than the sum of its proper divisors (37974389).

203312011 is a wasteful number, since it uses less digits than its factorization.

203312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 203312011 is about 14258.7520842464. The cubic root of 203312011 is about 588.0140167806.

Adding to 203312011 its reverse (110213302), we get a palindrome (313525313).

The spelling of 203312011 in words is "two hundred three million, three hundred twelve thousand, eleven".