440120431231 has 8 divisors (see below), whose sum is σ = 476222183024. Its totient is φ = 404339584320.

The previous prime is 440120431217. The next prime is 440120431241. The reversal of 440120431231 is 132134021044.

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 440120431231 - 2¹⁵ = 440120398463 is a prime.

It is a super-3 number, since 3×440120431231³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440120431196 and 440120431205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440120431241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80223366 + ... + 80228851.

It is an arithmetic number, because the mean of its divisors is an integer number (59527772878).

Almost surely, 2^440120431231 is an apocalyptic number.

440120431231 is a deficient number, since it is larger than the sum of its proper divisors (36101751793).

440120431231 is a wasteful number, since it uses less digits than its factorization.

440120431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160452441.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 440120431231 its reverse (132134021044), we get a palindrome (572254452275).

The spelling of 440120431231 in words is "four hundred forty billion, one hundred twenty million, four hundred thirty-one thousand, two hundred thirty-one".