203134900288321 has 4 divisors (see below), whose sum is σ = 204309090463572. Its totient is φ = 201960710113072.

The previous prime is 203134900288297. The next prime is 203134900288361. The reversal of 203134900288321 is 123882009431302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149562162252721 + 53572738035600 = 12229561^2 + 7319340^2 .

It is a cyclic number.

It is not a de Polignac number, because 203134900288321 - 2¹³ = 203134900280129 is a prime.

It is a super-3 number, since 3×203134900288321³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203134900288361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587095087366 + ... + 587095087711.

It is an arithmetic number, because the mean of its divisors is an integer number (51077272615893).

Almost surely, 2^{203134900288321} is an apocalyptic number.

It is an amenable number.

203134900288321 is a deficient number, since it is larger than the sum of its proper divisors (1174190175251).

203134900288321 is a wasteful number, since it uses less digits than its factorization.

203134900288321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174190175250.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 203134900288321 in words is "two hundred three trillion, one hundred thirty-four billion, nine hundred million, two hundred eighty-eight thousand, three hundred twenty-one".