243242633031 has 4 divisors (see below), whose sum is σ = 324323510712. Its totient is φ = 162161755352.

The previous prime is 243242632987. The next prime is 243242633047. The reversal of 243242633031 is 130336242342.

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 243242633031 - 2¹⁹ = 243242108743 is a prime.

It is a super-2 number, since 2×243242633031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243242632983 and 243242633001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243242638031) 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, 40540438836 + ... + 40540438841.

It is an arithmetic number, because the mean of its divisors is an integer number (81080877678).

Almost surely, 2^243242633031 is an apocalyptic number.

243242633031 is a deficient number, since it is larger than the sum of its proper divisors (81080877681).

243242633031 is an equidigital number, since it uses as much as digits as its factorization.

243242633031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81080877680.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 243242633031 its reverse (130336242342), we get a palindrome (373578875373).

The spelling of 243242633031 in words is "two hundred forty-three billion, two hundred forty-two million, six hundred thirty-three thousand, thirty-one".