564138431 has 4 divisors (see below), whose sum is σ = 573386664. Its totient is φ = 554890200.

The previous prime is 564138427. The next prime is 564138437. The reversal of 564138431 is 134831465.

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

It is a cyclic number.

It is not a de Polignac number, because 564138431 - 2² = 564138427 is a prime.

It is a super-2 number, since 2×564138431² = 636504338662283522, 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 = 564138391 and 564138400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564138437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4624025 + ... + 4624146.

It is an arithmetic number, because the mean of its divisors is an integer number (143346666).

Almost surely, 2^564138431 is an apocalyptic number.

564138431 is a deficient number, since it is larger than the sum of its proper divisors (9248233).

564138431 is an equidigital number, since it uses as much as digits as its factorization.

564138431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248232.

The product of its digits is 34560, while the sum is 35.

The square root of 564138431 is about 23751.5984935751. The cubic root of 564138431 is about 826.2825138205.

Adding to 564138431 its reverse (134831465), we get a palindrome (698969896).

The spelling of 564138431 in words is "five hundred sixty-four million, one hundred thirty-eight thousand, four hundred thirty-one".