481331815 has 4 divisors (see below), whose sum is σ = 577598184. Its totient is φ = 385065448.

The previous prime is 481331813. The next prime is 481331839. The reversal of 481331815 is 518133184.

It is a happy number.

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 481331815 - 2¹ = 481331813 is a prime.

It is a super-2 number, since 2×481331815² = 463360632262388450, 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 (481331813) 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, 48133177 + ... + 48133186.

It is an arithmetic number, because the mean of its divisors is an integer number (144399546).

Almost surely, 2^481331815 is an apocalyptic number.

481331815 is a deficient number, since it is larger than the sum of its proper divisors (96266369).

481331815 is an equidigital number, since it uses as much as digits as its factorization.

481331815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96266368.

The product of its digits is 11520, while the sum is 34.

The square root of 481331815 is about 21939.2756261459. The cubic root of 481331815 is about 783.6970094419.

Adding to 481331815 its reverse (518133184), we get a palindrome (999464999).

The spelling of 481331815 in words is "four hundred eighty-one million, three hundred thirty-one thousand, eight hundred fifteen".