20140210309 has 4 divisors (see below), whose sum is σ = 20395149760. Its totient is φ = 19885270860.

The previous prime is 20140210303. The next prime is 20140210327. The reversal of 20140210309 is 90301204102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90301204102 = 2 ⋅45150602051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20140210309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20140210309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140210303) 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, 127469607 + ... + 127469764.

It is an arithmetic number, because the mean of its divisors is an integer number (5098787440).

Almost surely, 2^20140210309 is an apocalyptic number.

It is an amenable number.

20140210309 is a deficient number, since it is larger than the sum of its proper divisors (254939451).

20140210309 is an equidigital number, since it uses as much as digits as its factorization.

20140210309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254939450.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 20140210309 in words is "twenty billion, one hundred forty million, two hundred ten thousand, three hundred nine".