478766231 has 2 divisors, whose sum is σ = 478766232. Its totient is φ = 478766230.

The previous prime is 478766221. The next prime is 478766243. The reversal of 478766231 is 132667874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478766231 - 2¹⁴ = 478749847 is a prime.

It is a super-2 number, since 2×478766231² = 458434207891890722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478766221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239383115 + 239383116.

It is an arithmetic number, because the mean of its divisors is an integer number (239383116).

Almost surely, 2^478766231 is an apocalyptic number.

478766231 is a deficient number, since it is larger than the sum of its proper divisors (1).

478766231 is an equidigital number, since it uses as much as digits as its factorization.

478766231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 478766231 is about 21880.7273873608. The cubic root of 478766231 is about 782.3021134341.

The spelling of 478766231 in words is "four hundred seventy-eight million, seven hundred sixty-six thousand, two hundred thirty-one".