243103122313 has 8 divisors (see below), whose sum is σ = 244869989000. Its totient is φ = 241340912640.

The previous prime is 243103122263. The next prime is 243103122319. The reversal of 243103122313 is 313221301342.

It can be written as a sum of positive squares in 4 ways, for example, as 36740072329 + 206363049984 = 191677^2 + 454272^2 .

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 243103122313 - 2³³ = 234513187721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243103122319) 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, 1059438 + ... + 1268311.

It is an arithmetic number, because the mean of its divisors is an integer number (30608748625).

Almost surely, 2^243103122313 is an apocalyptic number.

It is an amenable number.

243103122313 is a deficient number, since it is larger than the sum of its proper divisors (1766866687).

243103122313 is a wasteful number, since it uses less digits than its factorization.

243103122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328507.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 243103122313 its reverse (313221301342), we get a palindrome (556324423655).

The spelling of 243103122313 in words is "two hundred forty-three billion, one hundred three million, one hundred twenty-two thousand, three hundred thirteen".