243131468555 has 8 divisors (see below), whose sum is σ = 292088934144. Its totient is φ = 194284393600.

The previous prime is 243131468521. The next prime is 243131468561. The reversal of 243131468555 is 555864131342.

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

It is not a de Polignac number, because 243131468555 - 2¹⁶ = 243131403019 is a prime.

It is a super-2 number, since 2×243131468555² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27592811 + ... + 27601620.

It is an arithmetic number, because the mean of its divisors is an integer number (36511116768).

Almost surely, 2^243131468555 is an apocalyptic number.

243131468555 is a deficient number, since it is larger than the sum of its proper divisors (48957465589).

243131468555 is an equidigital number, since it uses as much as digits as its factorization.

243131468555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55195317.

The product of its digits is 1728000, while the sum is 47.

Adding to 243131468555 its reverse (555864131342), we get a palindrome (798995599897).

The spelling of 243131468555 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred sixty-eight thousand, five hundred fifty-five".