307421017 has 6 divisors (see below), whose sum is σ = 317658714. Its totient is φ = 297503280.

The previous prime is 307421011. The next prime is 307421039. The reversal of 307421017 is 710124703.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 289646361 + 17774656 = 17019^2 + 4216^2 .

It is a de Polignac number, because none of the positive numbers 2^k-307421017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 307420982 and 307421000.

It is not an unprimeable number, because it can be changed into a prime (307421011) 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, 158988 + ... + 160909.

It is an arithmetic number, because the mean of its divisors is an integer number (52943119).

Almost surely, 2^307421017 is an apocalyptic number.

It is an amenable number.

307421017 is a deficient number, since it is larger than the sum of its proper divisors (10237697).

307421017 is an equidigital number, since it uses as much as digits as its factorization.

307421017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319959 (or 319928 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 307421017 is about 17533.4257063473. The cubic root of 307421017 is about 674.9079102535.

The spelling of 307421017 in words is "three hundred seven million, four hundred twenty-one thousand, seventeen".