478646031 has 16 divisors (see below), whose sum is σ = 667641600. Its totient is φ = 304444800.

The previous prime is 478646009. The next prime is 478646039. The reversal of 478646031 is 130646874.

It is not a de Polignac number, because 478646031 - 2⁷ = 478645903 is a prime.

It is a super-2 number, since 2×478646031² = 458204045984105922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478646039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19020 + ... + 36318.

It is an arithmetic number, because the mean of its divisors is an integer number (41727600).

Almost surely, 2^478646031 is an apocalyptic number.

478646031 is a deficient number, since it is larger than the sum of its proper divisors (188995569).

478646031 is a wasteful number, since it uses less digits than its factorization.

478646031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17726.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 478646031 is about 21877.9805055220. The cubic root of 478646031 is about 782.2366391808.

The spelling of 478646031 in words is "four hundred seventy-eight million, six hundred forty-six thousand, thirty-one".