440232312321 has 24 divisors (see below), whose sum is σ = 650058664320. Its totient is φ = 286961609376.

The previous prime is 440232312301. The next prime is 440232312349. The reversal of 440232312321 is 123213232044.

440232312321 is a `hidden beast` number, since 4 + 4 + 0 + 2 + 323 + 12 + 321 = 666.

It is not a de Polignac number, because 440232312321 - 2¹⁰ = 440232311297 is a prime.

It is a super-2 number, since 2×440232312321² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (440232312301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79630 + ... + 941703.

It is an arithmetic number, because the mean of its divisors is an integer number (27085777680).

Almost surely, 2^440232312321 is an apocalyptic number.

It is an amenable number.

440232312321 is a deficient number, since it is larger than the sum of its proper divisors (209826351999).

440232312321 is a wasteful number, since it uses less digits than its factorization.

440232312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022405 (or 1022402 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 440232312321 its reverse (123213232044), we get a palindrome (563445544365).

The spelling of 440232312321 in words is "four hundred forty billion, two hundred thirty-two million, three hundred twelve thousand, three hundred twenty-one".