243131412323 has 4 divisors (see below), whose sum is σ = 243173489640. Its totient is φ = 243089335008.

The previous prime is 243131412301. The next prime is 243131412341. The reversal of 243131412323 is 323214131342.

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 243131412323 - 2²⁴ = 243114635107 is a prime.

It is a super-2 number, since 2×243131412323² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243131412343) 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, 21029990 + ... + 21041547.

It is an arithmetic number, because the mean of its divisors is an integer number (60793372410).

Almost surely, 2^243131412323 is an apocalyptic number.

243131412323 is a deficient number, since it is larger than the sum of its proper divisors (42077317).

243131412323 is an equidigital number, since it uses as much as digits as its factorization.

243131412323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42077316.

The product of its digits is 10368, while the sum is 29.

Adding to 243131412323 its reverse (323214131342), we get a palindrome (566345543665).

The spelling of 243131412323 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred twelve thousand, three hundred twenty-three".