243103053021 has 32 divisors (see below), whose sum is σ = 333864115200. Its totient is φ = 157275456000.

The previous prime is 243103052993. The next prime is 243103053031. The reversal of 243103053021 is 120350301342.

It is not a de Polignac number, because 243103053021 - 2⁵ = 243103052989 is a prime.

It is a super-2 number, since 2×243103053021² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243103052982 and 243103053000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243103053031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16838676 + ... + 16853106.

It is an arithmetic number, because the mean of its divisors is an integer number (10433253600).

Almost surely, 2^243103053021 is an apocalyptic number.

It is an amenable number.

243103053021 is a deficient number, since it is larger than the sum of its proper divisors (90761062179).

243103053021 is a wasteful number, since it uses less digits than its factorization.

243103053021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15637.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 243103053021 its reverse (120350301342), we get a palindrome (363453354363).

The spelling of 243103053021 in words is "two hundred forty-three billion, one hundred three million, fifty-three thousand, twenty-one".