243023130002431 has 4 divisors (see below), whose sum is σ = 243584384344672. Its totient is φ = 242461875660192.

The previous prime is 243023130002423. The next prime is 243023130002437. The reversal of 243023130002431 is 134200031320342.

It is a happy number.

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 243023130002431 - 2³ = 243023130002423 is a prime.

It is a super-2 number, since 2×243023130002431² (a number of 30 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 243023130002431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023130002437) 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, 280627170471 + ... + 280627171336.

It is an arithmetic number, because the mean of its divisors is an integer number (60896096086168).

Almost surely, 2^{243023130002431} is an apocalyptic number.

243023130002431 is a deficient number, since it is larger than the sum of its proper divisors (561254342241).

243023130002431 is an equidigital number, since it uses as much as digits as its factorization.

243023130002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561254342240.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243023130002431 its reverse (134200031320342), we get a palindrome (377223161322773).

The spelling of 243023130002431 in words is "two hundred forty-three trillion, twenty-three billion, one hundred thirty million, two thousand, four hundred thirty-one".