306913 has 2 divisors, whose sum is σ = 306914. Its totient is φ = 306912.

The previous prime is 306899. The next prime is 306919. The reversal of 306913 is 319603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304704 + 2209 = 552^2 + 47^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306913 is a prime.

It is not a weakly prime, because it can be changed into another prime (306919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153456 + 153457.

It is an arithmetic number, because the mean of its divisors is an integer number (153457).

2³⁰⁶⁹¹³ is an apocalyptic number.

It is an amenable number.

306913 is a deficient number, since it is larger than the sum of its proper divisors (1).

306913 is an equidigital number, since it uses as much as digits as its factorization.

306913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 306913 is about 553.9972924122. The cubic root of 306913 is about 67.4535940751.

It can be divided in two parts, 306 and 913, that multiplied together give a triangular number (279378 = T₇₄₇).

The spelling of 306913 in words is "three hundred six thousand, nine hundred thirteen".