3181485481 has 2 divisors, whose sum is σ = 3181485482. Its totient is φ = 3181485480.

The previous prime is 3181485467. The next prime is 3181485499. The reversal of 3181485481 is 1845841813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2860538256 + 320947225 = 53484^2 + 17915^2 .

It is a cyclic number.

It is not a de Polignac number, because 3181485481 - 2⁷ = 3181485353 is a prime.

It is a super-2 number, since 2×3181485481² = 20243699731627602722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3181485421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590742740 + 1590742741.

It is an arithmetic number, because the mean of its divisors is an integer number (1590742741).

Almost surely, 2^3181485481 is an apocalyptic number.

It is an amenable number.

3181485481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3181485481 is an equidigital number, since it uses as much as digits as its factorization.

3181485481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 43.

The square root of 3181485481 is about 56404.6583271276. The cubic root of 3181485481 is about 1470.7650977294.

The spelling of 3181485481 in words is "three billion, one hundred eighty-one million, four hundred eighty-five thousand, four hundred eighty-one".