20140223309 has 4 divisors (see below), whose sum is σ = 21015885216. Its totient is φ = 19264561404.

The previous prime is 20140223297. The next prime is 20140223329. The reversal of 20140223309 is 90332204102.

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.

It is a cyclic number.

It is not a de Polignac number, because 20140223309 - 2⁸ = 20140223053 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 (20140223329) 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, 437830919 + ... + 437830964.

It is an arithmetic number, because the mean of its divisors is an integer number (5253971304).

Almost surely, 2^20140223309 is an apocalyptic number.

It is an amenable number.

20140223309 is a deficient number, since it is larger than the sum of its proper divisors (875661907).

20140223309 is an equidigital number, since it uses as much as digits as its factorization.

20140223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875661906.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 20140223309 in words is "twenty billion, one hundred forty million, two hundred twenty-three thousand, three hundred nine".