20230309 has 8 divisors (see below), whose sum is σ = 22105440. Its totient is φ = 18361200.

The previous prime is 20230303. The next prime is 20230361. The reversal of 20230309 is 90303202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20230309 - 2¹³ = 20222117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8379 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (2763180).

Almost surely, 2^20230309 is an apocalyptic number.

It is an amenable number.

20230309 is a deficient number, since it is larger than the sum of its proper divisors (1875131).

20230309 is a wasteful number, since it uses less digits than its factorization.

20230309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 20230309 is about 4497.8115789793. The cubic root of 20230309 is about 272.4797123184.

The spelling of 20230309 in words is "twenty million, two hundred thirty thousand, three hundred nine".