567231421 has 2 divisors, whose sum is σ = 567231422. Its totient is φ = 567231420.

The previous prime is 567231419. The next prime is 567231463. The reversal of 567231421 is 124132765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528356196 + 38875225 = 22986^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 567231421 - 2¹ = 567231419 is a prime.

Together with 567231419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (567231481) 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 as a sum of consecutive naturals, namely, 283615710 + 283615711.

It is an arithmetic number, because the mean of its divisors is an integer number (283615711).

Almost surely, 2^567231421 is an apocalyptic number.

It is an amenable number.

567231421 is a deficient number, since it is larger than the sum of its proper divisors (1).

567231421 is an equidigital number, since it uses as much as digits as its factorization.

567231421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 567231421 is about 23816.6206880825. The cubic root of 567231421 is about 827.7898430638.

The spelling of 567231421 in words is "five hundred sixty-seven million, two hundred thirty-one thousand, four hundred twenty-one".