243130122311 has 4 divisors (see below), whose sum is σ = 243133168224. Its totient is φ = 243127076400.

The previous prime is 243130122307. The next prime is 243130122337. The reversal of 243130122311 is 113221031342.

243130122311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 243130122311 - 2² = 243130122307 is a prime.

It is a super-2 number, since 2×243130122311² (a number of 24 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 (243130122511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399910 + ... + 1563971.

It is an arithmetic number, because the mean of its divisors is an integer number (60783292056).

Almost surely, 2^243130122311 is an apocalyptic number.

243130122311 is a deficient number, since it is larger than the sum of its proper divisors (3045913).

243130122311 is an equidigital number, since it uses as much as digits as its factorization.

243130122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045912.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 243130122311 its reverse (113221031342), we get a palindrome (356351153653).

The spelling of 243130122311 in words is "two hundred forty-three billion, one hundred thirty million, one hundred twenty-two thousand, three hundred eleven".