440643125231 has 4 divisors (see below), whose sum is σ = 440645711472. Its totient is φ = 440640538992.

The previous prime is 440643125159. The next prime is 440643125233. The reversal of 440643125231 is 132521346044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440643125231 is a prime.

It is a super-2 number, since 2×440643125231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440643125191 and 440643125200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440643125233) 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 3 ways as a sum of consecutive naturals, for example, 1018046 + ... + 1384811.

It is an arithmetic number, because the mean of its divisors is an integer number (110161427868).

Almost surely, 2^440643125231 is an apocalyptic number.

440643125231 is a deficient number, since it is larger than the sum of its proper divisors (2586241).

440643125231 is a wasteful number, since it uses less digits than its factorization.

440643125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586240.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 440643125231 in words is "four hundred forty billion, six hundred forty-three million, one hundred twenty-five thousand, two hundred thirty-one".