243321035131 has 4 divisors (see below), whose sum is σ = 247911998112. Its totient is φ = 238730072152.

The previous prime is 243321035081. The next prime is 243321035179. The reversal of 243321035131 is 131530123342.

243321035131 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 not a de Polignac number, because 243321035131 - 2¹⁷ = 243320904059 is a prime.

It is a super-2 number, since 2×243321035131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243321035131.

It is not an unprimeable number, because it can be changed into a prime (243321032131) 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, 2295481411 + ... + 2295481516.

It is an arithmetic number, because the mean of its divisors is an integer number (61977999528).

Almost surely, 2^243321035131 is an apocalyptic number.

243321035131 is a deficient number, since it is larger than the sum of its proper divisors (4590962981).

243321035131 is an equidigital number, since it uses as much as digits as its factorization.

243321035131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4590962980.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 243321035131 its reverse (131530123342), we get a palindrome (374851158473).

The spelling of 243321035131 in words is "two hundred forty-three billion, three hundred twenty-one million, thirty-five thousand, one hundred thirty-one".