307481985 has 24 divisors (see below), whose sum is σ = 533542464. Its totient is φ = 163813920.

The previous prime is 307481969. The next prime is 307481987. The reversal of 307481985 is 589184703.

It is not a de Polignac number, because 307481985 - 2⁴ = 307481969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 307481985.

It is not an unprimeable number, because it can be changed into a prime (307481987) 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 23 ways as a sum of consecutive naturals, for example, 45964 + ... + 52226.

It is an arithmetic number, because the mean of its divisors is an integer number (22230936).

Almost surely, 2^307481985 is an apocalyptic number.

It is an amenable number.

307481985 is a deficient number, since it is larger than the sum of its proper divisors (226060479).

307481985 is a wasteful number, since it uses less digits than its factorization.

307481985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365 (or 7362 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 307481985 is about 17535.1642421735. The cubic root of 307481985 is about 674.9525234098.

The spelling of 307481985 in words is "three hundred seven million, four hundred eighty-one thousand, nine hundred eighty-five".