306906923 has 4 divisors (see below), whose sum is σ = 309775320. Its totient is φ = 304038528.

The previous prime is 306906907. The next prime is 306906947. The reversal of 306906923 is 329609603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329609603 = 10711 ⋅30773.

It is a cyclic number.

It is not a de Polignac number, because 306906923 - 2⁴ = 306906907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306906973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434038 + ... + 1434251.

It is an arithmetic number, because the mean of its divisors is an integer number (77443830).

Almost surely, 2^306906923 is an apocalyptic number.

306906923 is a deficient number, since it is larger than the sum of its proper divisors (2868397).

306906923 is a wasteful number, since it uses less digits than its factorization.

306906923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868396.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 306906923 is about 17518.7591740968. The cubic root of 306906923 is about 674.5314886947.

The spelling of 306906923 in words is "three hundred six million, nine hundred six thousand, nine hundred twenty-three".