481581331 has 24 divisors (see below), whose sum is σ = 606735360. Its totient is φ = 374159280.

The previous prime is 481581299. The next prime is 481581343. The reversal of 481581331 is 133185184.

It is a happy number.

It is not a de Polignac number, because 481581331 - 2⁵ = 481581299 is a prime.

It is a super-2 number, since 2×481581331² = 463841156735463122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (481581371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405120 + ... + 406306.

It is an arithmetic number, because the mean of its divisors is an integer number (25280640).

Almost surely, 2^481581331 is an apocalyptic number.

481581331 is a deficient number, since it is larger than the sum of its proper divisors (125154029).

481581331 is a wasteful number, since it uses less digits than its factorization.

481581331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1684 counting only the distinct ones).

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

The square root of 481581331 is about 21944.9614034748. The cubic root of 481581331 is about 783.8324054115.

The spelling of 481581331 in words is "four hundred eighty-one million, five hundred eighty-one thousand, three hundred thirty-one".