243044420331 has 8 divisors (see below), whose sum is σ = 331963110864. Its totient is φ = 158077671680.

The previous prime is 243044420309. The next prime is 243044420341. The reversal of 243044420331 is 133024440342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243044420331 - 2¹³ = 243044412139 is a prime.

It is a super-2 number, since 2×243044420331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243044420341) 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, 987985326 + ... + 987985571.

It is an arithmetic number, because the mean of its divisors is an integer number (41495388858).

Almost surely, 2^243044420331 is an apocalyptic number.

243044420331 is a deficient number, since it is larger than the sum of its proper divisors (88918690533).

243044420331 is a wasteful number, since it uses less digits than its factorization.

243044420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975970941.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 243044420331 its reverse (133024440342), we get a palindrome (376068860673).

The spelling of 243044420331 in words is "two hundred forty-three billion, forty-four million, four hundred twenty thousand, three hundred thirty-one".