481331813 has 2 divisors, whose sum is σ = 481331814. Its totient is φ = 481331812.

The previous prime is 481331717. The next prime is 481331839. The reversal of 481331813 is 318133184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342139009 + 139192804 = 18497^2 + 11798^2 .

It is a cyclic number.

It is not a de Polignac number, because 481331813 - 2¹⁸ = 481069669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481331813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481330813) 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 as a sum of consecutive naturals, namely, 240665906 + 240665907.

It is an arithmetic number, because the mean of its divisors is an integer number (240665907).

Almost surely, 2^481331813 is an apocalyptic number.

It is an amenable number.

481331813 is a deficient number, since it is larger than the sum of its proper divisors (1).

481331813 is an equidigital number, since it uses as much as digits as its factorization.

481331813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 481331813 is about 21939.2755805656. The cubic root of 481331813 is about 783.6970083564.

Adding to 481331813 its reverse (318133184), we get a palindrome (799464997).

It can be divided in two parts, 48133181 and 3, that added together give a palindrome (48133184).

The spelling of 481331813 in words is "four hundred eighty-one million, three hundred thirty-one thousand, eight hundred thirteen".