309688114 has 4 divisors (see below), whose sum is σ = 464532174. Its totient is φ = 154844056.

The previous prime is 309688051. The next prime is 309688121. The reversal of 309688114 is 411886903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 411886903 = 53 ⋅7771451.

It can be written as a sum of positive squares in only one way, i.e., 293951025 + 15737089 = 17145^2 + 3967^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77422027 + ... + 77422030.

Almost surely, 2^309688114 is an apocalyptic number.

309688114 is a deficient number, since it is larger than the sum of its proper divisors (154844060).

309688114 is a wasteful number, since it uses less digits than its factorization.

309688114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154844059.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 309688114 is about 17597.9576655929. The cubic root of 309688114 is about 676.5628999022.

The spelling of 309688114 in words is "three hundred nine million, six hundred eighty-eight thousand, one hundred fourteen".