581428223 has 2 divisors, whose sum is σ = 581428224. Its totient is φ = 581428222.

The previous prime is 581428213. The next prime is 581428231. The reversal of 581428223 is 322824185.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 581428223 - 2⁴ = 581428207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (581428213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290714111 + 290714112.

It is an arithmetic number, because the mean of its divisors is an integer number (290714112).

Almost surely, 2^581428223 is an apocalyptic number.

581428223 is a deficient number, since it is larger than the sum of its proper divisors (1).

581428223 is an equidigital number, since it uses as much as digits as its factorization.

581428223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 35.

The square root of 581428223 is about 24112.8227920333. The cubic root of 581428223 is about 834.6390556341.

The spelling of 581428223 in words is "five hundred eighty-one million, four hundred twenty-eight thousand, two hundred twenty-three".