307220713 has 2 divisors, whose sum is σ = 307220714. Its totient is φ = 307220712.

The previous prime is 307220707. The next prime is 307220741. The reversal of 307220713 is 317022703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203119504 + 104101209 = 14252^2 + 10203^2 .

It is a cyclic number.

It is not a de Polignac number, because 307220713 - 2⁹ = 307220201 is a prime.

It is not a weakly prime, because it can be changed into another prime (307220773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153610356 + 153610357.

It is an arithmetic number, because the mean of its divisors is an integer number (153610357).

Almost surely, 2^307220713 is an apocalyptic number.

It is an amenable number.

307220713 is a deficient number, since it is larger than the sum of its proper divisors (1).

307220713 is an equidigital number, since it uses as much as digits as its factorization.

307220713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 307220713 is about 17527.7127144417. The cubic root of 307220713 is about 674.7612968492.

The spelling of 307220713 in words is "three hundred seven million, two hundred twenty thousand, seven hundred thirteen".