431748910561 has 2 divisors, whose sum is σ = 431748910562. Its totient is φ = 431748910560.

The previous prime is 431748910559. The next prime is 431748910651. The reversal of 431748910561 is 165019847134.

Together with next prime (431748910651) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419418140625 + 12330769936 = 647625^2 + 111044^2 .

It is a cyclic number.

It is not a de Polignac number, because 431748910561 - 2¹ = 431748910559 is a prime.

It is a super-2 number, since 2×431748910561² (a number of 24 digits) contains 22 as substring.

Together with 431748910559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (431748910531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215874455280 + 215874455281.

It is an arithmetic number, because the mean of its divisors is an integer number (215874455281).

Almost surely, 2^431748910561 is an apocalyptic number.

It is an amenable number.

431748910561 is a deficient number, since it is larger than the sum of its proper divisors (1).

431748910561 is an equidigital number, since it uses as much as digits as its factorization.

431748910561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 431748910561 in words is "four hundred thirty-one billion, seven hundred forty-eight million, nine hundred ten thousand, five hundred sixty-one".