434311561 has 4 divisors (see below), whose sum is σ = 434890624. Its totient is φ = 433732500.

The previous prime is 434311547. The next prime is 434311571. The reversal of 434311561 is 165113434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 434311561 - 2⁷ = 434311433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434311571) 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, 288405 + ... + 289906.

It is an arithmetic number, because the mean of its divisors is an integer number (108722656).

Almost surely, 2^434311561 is an apocalyptic number.

It is an amenable number.

434311561 is a deficient number, since it is larger than the sum of its proper divisors (579063).

434311561 is an equidigital number, since it uses as much as digits as its factorization.

434311561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579062.

The product of its digits is 4320, while the sum is 28.

The square root of 434311561 is about 20840.1430177434. The cubic root of 434311561 is about 757.2985582636.

Adding to 434311561 its reverse (165113434), we get a palindrome (599424995).

The spelling of 434311561 in words is "four hundred thirty-four million, three hundred eleven thousand, five hundred sixty-one".