309713107 has 4 divisors (see below), whose sum is σ = 337868856. Its totient is φ = 281557360.

The previous prime is 309713087. The next prime is 309713119. The reversal of 309713107 is 701317903.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 309713107 - 2¹⁹ = 309188819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309713177) 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, 14077858 + ... + 14077879.

It is an arithmetic number, because the mean of its divisors is an integer number (84467214).

Almost surely, 2^309713107 is an apocalyptic number.

309713107 is a deficient number, since it is larger than the sum of its proper divisors (28155749).

309713107 is a wasteful number, since it uses less digits than its factorization.

309713107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28155748.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 309713107 is about 17598.6677620779. The cubic root of 309713107 is about 676.5810998060.

The spelling of 309713107 in words is "three hundred nine million, seven hundred thirteen thousand, one hundred seven".