203110323111311 has 8 divisors (see below), whose sum is σ = 253228454788224. Its totient is φ = 158267784242520.

The previous prime is 203110323111281. The next prime is 203110323111331. The reversal of 203110323111311 is 113111323011302.

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 203110323111311 - 2³⁰ = 203109249369487 is a prime.

It is a super-2 number, since 2×203110323111311² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203110323111331) 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, 1318898201945 + ... + 1318898202098.

It is an arithmetic number, because the mean of its divisors is an integer number (31653556848528).

Almost surely, 2^{203110323111311} is an apocalyptic number.

203110323111311 is a deficient number, since it is larger than the sum of its proper divisors (50118131676913).

203110323111311 is a wasteful number, since it uses less digits than its factorization.

203110323111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637796404061.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 203110323111311 its reverse (113111323011302), we get a palindrome (316221646122613).

The spelling of 203110323111311 in words is "two hundred three trillion, one hundred ten billion, three hundred twenty-three million, one hundred eleven thousand, three hundred eleven".