243102312331 has 8 divisors (see below), whose sum is σ = 249313703184. Its totient is φ = 236904353280.

The previous prime is 243102312301. The next prime is 243102312367. The reversal of 243102312331 is 133213201342.

243102312331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243102312331 is a prime.

It is a super-2 number, since 2×243102312331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243102312296 and 243102312305.

It is not an unprimeable number, because it can be changed into a prime (243102312301) 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 7 ways as a sum of consecutive naturals, for example, 3321286 + ... + 3393691.

It is an arithmetic number, because the mean of its divisors is an integer number (31164212898).

Almost surely, 2^243102312331 is an apocalyptic number.

243102312331 is a deficient number, since it is larger than the sum of its proper divisors (6211390853).

243102312331 is an equidigital number, since it uses as much as digits as its factorization.

243102312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715901.

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

Adding to 243102312331 its reverse (133213201342), we get a palindrome (376315513673).

The spelling of 243102312331 in words is "two hundred forty-three billion, one hundred two million, three hundred twelve thousand, three hundred thirty-one".