478304431 has 16 divisors (see below), whose sum is σ = 526496256. Its totient is φ = 430920000.

The previous prime is 478304419. The next prime is 478304447. The reversal of 478304431 is 134403874.

It is a cyclic number.

It is not a de Polignac number, because 478304431 - 2¹⁹ = 477780143 is a prime.

It is a super-2 number, since 2×478304431² = 457550257428467522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478304471) 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, 837376 + ... + 837946.

It is an arithmetic number, because the mean of its divisors is an integer number (32906016).

Almost surely, 2^478304431 is an apocalyptic number.

478304431 is a deficient number, since it is larger than the sum of its proper divisors (48191825).

478304431 is a wasteful number, since it uses less digits than its factorization.

478304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 478304431 is about 21870.1721758197. The cubic root of 478304431 is about 782.0505060666.

The spelling of 478304431 in words is "four hundred seventy-eight million, three hundred four thousand, four hundred thirty-one".