478343531 has 4 divisors (see below), whose sum is σ = 478399632. Its totient is φ = 478287432.

The previous prime is 478343519. The next prime is 478343533. The reversal of 478343531 is 135343874.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478343531 is a prime.

It is a super-2 number, since 2×478343531² = 457625067299095922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478343533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12320 + ... + 33293.

It is an arithmetic number, because the mean of its divisors is an integer number (119599908).

Almost surely, 2^478343531 is an apocalyptic number.

478343531 is a deficient number, since it is larger than the sum of its proper divisors (56101).

478343531 is a wasteful number, since it uses less digits than its factorization.

478343531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56100.

The product of its digits is 120960, while the sum is 38.

The square root of 478343531 is about 21871.0660691243. The cubic root of 478343531 is about 782.0718156061.

It can be divided in two parts, 478343 and 531, that added together give a palindrome (478874).

The spelling of 478343531 in words is "four hundred seventy-eight million, three hundred forty-three thousand, five hundred thirty-one".