565120431 has 6 divisors (see below), whose sum is σ = 816285080. Its totient is φ = 376746948.

The previous prime is 565120429. The next prime is 565120441. The reversal of 565120431 is 134021565.

565120431 is a `hidden beast` number, since 5 + 651 + 2 + 0 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 565120431 - 2¹ = 565120429 is a prime.

It is a super-2 number, since 2×565120431² = 638722203067251522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 565120395 and 565120404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565120441) 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 5 ways as a sum of consecutive naturals, for example, 31395571 + ... + 31395588.

Almost surely, 2^565120431 is an apocalyptic number.

565120431 is a deficient number, since it is larger than the sum of its proper divisors (251164649).

565120431 is a wasteful number, since it uses less digits than its factorization.

565120431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62791165 (or 62791162 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 565120431 is about 23772.2617981546. The cubic root of 565120431 is about 826.7616746257.

Adding to 565120431 its reverse (134021565), we get a palindrome (699141996).

The spelling of 565120431 in words is "five hundred sixty-five million, one hundred twenty thousand, four hundred thirty-one".