203312113231311 has 18 divisors (see below), whose sum is σ = 341619673253352. Its totient is φ = 116178350417640.

The previous prime is 203312113231289. The next prime is 203312113231313. The reversal of 203312113231311 is 113132311213302.

203312113231311 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 1 + 2 + 113 + 231 + 311 = 666.

It is not a de Polignac number, because 203312113231311 - 2²² = 203312109037007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203312113231313) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 230512599595 + ... + 230512600476.

Almost surely, 2^{203312113231311} is an apocalyptic number.

203312113231311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

203312113231311 is a deficient number, since it is larger than the sum of its proper divisors (138307560022041).

203312113231311 is a wasteful number, since it uses less digits than its factorization.

203312113231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461025200091 (or 461025200081 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 203312113231311 its reverse (113132311213302), we get a palindrome (316444424444613).

The spelling of 203312113231311 in words is "two hundred three trillion, three hundred twelve billion, one hundred thirteen million, two hundred thirty-one thousand, three hundred eleven".