307085481 has 6 divisors (see below), whose sum is σ = 443567930. Its totient is φ = 204723648.

The previous prime is 307085479. The next prime is 307085491. The reversal of 307085481 is 184580703.

307085481 is a `hidden beast` number, since 30 + 70 + 85 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 216531225 + 90554256 = 14715^2 + 9516^2 .

It is not a de Polignac number, because 307085481 - 2¹ = 307085479 is a prime.

It is a super-2 number, since 2×307085481² = 188602985282002722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307085431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17060296 + ... + 17060313.

Almost surely, 2^307085481 is an apocalyptic number.

It is an amenable number.

307085481 is a deficient number, since it is larger than the sum of its proper divisors (136482449).

307085481 is a wasteful number, since it uses less digits than its factorization.

307085481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34120615 (or 34120612 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 307085481 is about 17523.8546273358. The cubic root of 307085481 is about 674.6622771458.

The spelling of 307085481 in words is "three hundred seven million, eighty-five thousand, four hundred eighty-one".