440543025431 has 2 divisors, whose sum is σ = 440543025432. Its totient is φ = 440543025430.

The previous prime is 440543025413. The next prime is 440543025451. The reversal of 440543025431 is 134520345044.

Together with previous prime (440543025413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440543025431 - 2³⁰ = 439469283607 is a prime.

It is a super-2 number, since 2×440543025431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 440543025391 and 440543025400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440543025451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220271512715 + 220271512716.

It is an arithmetic number, because the mean of its divisors is an integer number (220271512716).

Almost surely, 2^440543025431 is an apocalyptic number.

440543025431 is a deficient number, since it is larger than the sum of its proper divisors (1).

440543025431 is an equidigital number, since it uses as much as digits as its factorization.

440543025431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 440543025431 in words is "four hundred forty billion, five hundred forty-three million, twenty-five thousand, four hundred thirty-one".