478263431 has 4 divisors (see below), whose sum is σ = 506396592. Its totient is φ = 450130272.

The previous prime is 478263407. The next prime is 478263469. The reversal of 478263431 is 134362874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478263431 - 2⁶ = 478263367 is a prime.

It is a super-2 number, since 2×478263431² = 457471818863783522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478263131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14066555 + ... + 14066588.

It is an arithmetic number, because the mean of its divisors is an integer number (126599148).

Almost surely, 2^478263431 is an apocalyptic number.

478263431 is a deficient number, since it is larger than the sum of its proper divisors (28133161).

478263431 is a wasteful number, since it uses less digits than its factorization.

478263431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28133160.

The product of its digits is 96768, while the sum is 38.

The square root of 478263431 is about 21869.2348060009. The cubic root of 478263431 is about 782.0281597777.

The spelling of 478263431 in words is "four hundred seventy-eight million, two hundred sixty-three thousand, four hundred thirty-one".