307424681 has 6 divisors (see below), whose sum is σ = 311699070. Its totient is φ = 303208128.

The previous prime is 307424671. The next prime is 307424701. The reversal of 307424681 is 186424703.

It can be written as a sum of positive squares in 3 ways, for example, as 21307456 + 286117225 = 4616^2 + 16915^2 .

It is a de Polignac number, because none of the positive numbers 2^k-307424681 is a prime.

It is a super-2 number, since 2×307424681² = 189019868975903522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307424641) 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, 23516 + ... + 34173.

It is an arithmetic number, because the mean of its divisors is an integer number (51949845).

Almost surely, 2^307424681 is an apocalyptic number.

It is an amenable number.

307424681 is a deficient number, since it is larger than the sum of its proper divisors (4274389).

307424681 is an frugal number, since it uses more digits than its factorization.

307424681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57835 (or 57762 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 307424681 is about 17533.5301921775. The cubic root of 307424681 is about 674.9105915414.

The spelling of 307424681 in words is "three hundred seven million, four hundred twenty-four thousand, six hundred eighty-one".