203421313311 has 16 divisors (see below), whose sum is σ = 276417083520. Its totient is φ = 133021193760.

The previous prime is 203421313301. The next prime is 203421313313. The reversal of 203421313311 is 113313124302.

It is not a de Polignac number, because 203421313311 - 2¹³ = 203421305119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203421313313) 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, 462300 + ... + 787758.

It is an arithmetic number, because the mean of its divisors is an integer number (17276067720).

Almost surely, 2^203421313311 is an apocalyptic number.

203421313311 is a deficient number, since it is larger than the sum of its proper divisors (72995770209).

203421313311 is a wasteful number, since it uses less digits than its factorization.

203421313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329446.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 203421313311 its reverse (113313124302), we get a palindrome (316734437613).

The spelling of 203421313311 in words is "two hundred three billion, four hundred twenty-one million, three hundred thirteen thousand, three hundred eleven".