243312030133 has 4 divisors (see below), whose sum is σ = 243407711808. Its totient is φ = 243216348460.

The previous prime is 243312030097. The next prime is 243312030161. The reversal of 243312030133 is 331030213342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331030213342 = 2 ⋅165515106671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243312030133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243312030098 and 243312030107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243312031133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47837023 + ... + 47842108.

It is an arithmetic number, because the mean of its divisors is an integer number (60851927952).

Almost surely, 2^243312030133 is an apocalyptic number.

It is an amenable number.

243312030133 is a deficient number, since it is larger than the sum of its proper divisors (95681675).

243312030133 is an equidigital number, since it uses as much as digits as its factorization.

243312030133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95681674.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 243312030133 its reverse (331030213342), we get a palindrome (574342243475).

The spelling of 243312030133 in words is "two hundred forty-three billion, three hundred twelve million, thirty thousand, one hundred thirty-three".