203144120311 has 8 divisors (see below), whose sum is σ = 231247062144. Its totient is φ = 176647060920.

The previous prime is 203144120299. The next prime is 203144120351. The reversal of 203144120311 is 113021441302.

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

It is not a de Polignac number, because 203144120311 - 2²³ = 203135731703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203144120351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401470341 + ... + 401470846.

It is an arithmetic number, because the mean of its divisors is an integer number (28905882768).

Almost surely, 2^203144120311 is an apocalyptic number.

203144120311 is a deficient number, since it is larger than the sum of its proper divisors (28102941833).

203144120311 is a wasteful number, since it uses less digits than its factorization.

203144120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802941221.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 203144120311 its reverse (113021441302), we get a palindrome (316165561613).

The spelling of 203144120311 in words is "two hundred three billion, one hundred forty-four million, one hundred twenty thousand, three hundred eleven".