243213321440031 has 8 divisors (see below), whose sum is σ = 324836872249344. Its totient is φ = 161865992462040.

The previous prime is 243213321439987. The next prime is 243213321440053. The reversal of 243213321440031 is 130044123312342.

243213321440031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243213321440031 - 2¹⁰ = 243213321439007 is a prime.

It is a super-2 number, since 2×243213321440031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243213321439974 and 243213321440001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243213321940031) 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, 69055455775 + ... + 69055459296.

It is an arithmetic number, because the mean of its divisors is an integer number (40604609031168).

Almost surely, 2^{243213321440031} is an apocalyptic number.

243213321440031 is a deficient number, since it is larger than the sum of its proper divisors (81623550809313).

243213321440031 is a wasteful number, since it uses less digits than its factorization.

243213321440031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138110915661.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 243213321440031 its reverse (130044123312342), we get a palindrome (373257444752373).

The spelling of 243213321440031 in words is "two hundred forty-three trillion, two hundred thirteen billion, three hundred twenty-one million, four hundred forty thousand, thirty-one".