20314203421 has 4 divisors (see below), whose sum is σ = 20697490332. Its totient is φ = 19930916512.

The previous prime is 20314203383. The next prime is 20314203433. The reversal of 20314203421 is 12430241302.

20314203421 = 13791² + 13792² + ... + 13896².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18636072196 + 1678131225 = 136514^2 + 40965^2 .

It is a cyclic number.

It is not a de Polignac number, because 20314203421 - 2¹¹ = 20314201373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20314203392 and 20314203401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191643376 + ... + 191643481.

It is an arithmetic number, because the mean of its divisors is an integer number (5174372583).

Almost surely, 2^20314203421 is an apocalyptic number.

It is an amenable number.

20314203421 is a deficient number, since it is larger than the sum of its proper divisors (383286911).

20314203421 is an equidigital number, since it uses as much as digits as its factorization.

20314203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383286910.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20314203421 its reverse (12430241302), we get a palindrome (32744444723).

The spelling of 20314203421 in words is "twenty billion, three hundred fourteen million, two hundred three thousand, four hundred twenty-one".