307420517 has 4 divisors (see below), whose sum is σ = 307607040. Its totient is φ = 307233996.

The previous prime is 307420493. The next prime is 307420543. The reversal of 307420517 is 715024703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 307420517 - 2⁶ = 307420453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 307420517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307420567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90767 + ... + 94092.

It is an arithmetic number, because the mean of its divisors is an integer number (76901760).

Almost surely, 2^307420517 is an apocalyptic number.

It is an amenable number.

307420517 is a deficient number, since it is larger than the sum of its proper divisors (186523).

307420517 is a wasteful number, since it uses less digits than its factorization.

307420517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186522.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 307420517 is about 17533.4114478615. The cubic root of 307420517 is about 674.9075443556.

The spelling of 307420517 in words is "three hundred seven million, four hundred twenty thousand, five hundred seventeen".