243023142431 has 8 divisors (see below), whose sum is σ = 246499190784. Its totient is φ = 239548571640.

The previous prime is 243023142413. The next prime is 243023142463. The reversal of 243023142431 is 134241320342.

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-243023142431 is a prime.

It is a super-2 number, since 2×243023142431² (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 = 243023142394 and 243023142403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023142331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35951 + ... + 698096.

It is an arithmetic number, because the mean of its divisors is an integer number (30812398848).

Almost surely, 2^243023142431 is an apocalyptic number.

243023142431 is a deficient number, since it is larger than the sum of its proper divisors (3476048353).

243023142431 is an equidigital number, since it uses as much as digits as its factorization.

243023142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738781.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243023142431 its reverse (134241320342), we get a palindrome (377264462773).

The spelling of 243023142431 in words is "two hundred forty-three billion, twenty-three million, one hundred forty-two thousand, four hundred thirty-one".