478322231 has 2 divisors, whose sum is σ = 478322232. Its totient is φ = 478322230.

The previous prime is 478322209. The next prime is 478322267. The reversal of 478322231 is 132223874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478322231 - 2¹⁸ = 478060087 is a prime.

It is a super-2 number, since 2×478322231² = 457584313337634722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478322731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239161115 + 239161116.

It is an arithmetic number, because the mean of its divisors is an integer number (239161116).

Almost surely, 2^478322231 is an apocalyptic number.

478322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

478322231 is an equidigital number, since it uses as much as digits as its factorization.

478322231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 478322231 is about 21870.5791189900. The cubic root of 478322231 is about 782.0602072286.

The spelling of 478322231 in words is "four hundred seventy-eight million, three hundred twenty-two thousand, two hundred thirty-one".