481309331 has 4 divisors (see below), whose sum is σ = 481366464. Its totient is φ = 481252200.

The previous prime is 481309319. The next prime is 481309333. The reversal of 481309331 is 133903184.

It is a happy number.

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-481309331 is a prime.

It is a super-2 number, since 2×481309331² = 463317344215335122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481309333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13160 + ... + 33701.

It is an arithmetic number, because the mean of its divisors is an integer number (120341616).

Almost surely, 2^481309331 is an apocalyptic number.

481309331 is a deficient number, since it is larger than the sum of its proper divisors (57133).

481309331 is a wasteful number, since it uses less digits than its factorization.

481309331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57132.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 481309331 is about 21938.7632057963. The cubic root of 481309331 is about 783.6848065516.

The spelling of 481309331 in words is "four hundred eighty-one million, three hundred nine thousand, three hundred thirty-one".