1240334430321 has 32 divisors (see below), whose sum is σ = 1972288051200. Its totient is φ = 677919521664.

The previous prime is 1240334430289. The next prime is 1240334430343. The reversal of 1240334430321 is 1230344330421.

It is a happy number.

It is not a de Polignac number, because 1240334430321 - 2⁵ = 1240334430289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240334430221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20182386 + ... + 20243748.

It is an arithmetic number, because the mean of its divisors is an integer number (61634001600).

Almost surely, 2^{1240334430321} is an apocalyptic number.

It is an amenable number.

1240334430321 is a deficient number, since it is larger than the sum of its proper divisors (731953620879).

1240334430321 is a wasteful number, since it uses less digits than its factorization.

1240334430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103245.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1240334430321 its reverse (1230344330421), we get a palindrome (2470678760742).

The spelling of 1240334430321 in words is "one trillion, two hundred forty billion, three hundred thirty-four million, four hundred thirty thousand, three hundred twenty-one".