20314421 has 4 divisors (see below), whose sum is σ = 20373312. Its totient is φ = 20255532.

The previous prime is 20314417. The next prime is 20314429. The reversal of 20314421 is 12441302.

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: 12441302 = 2 ⋅6220651.

It is a cyclic number.

It is not a de Polignac number, because 20314421 - 2² = 20314417 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 20314421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314429) 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, 28925 + ... + 29618.

It is an arithmetic number, because the mean of its divisors is an integer number (5093328).

Almost surely, 2^20314421 is an apocalyptic number.

It is an amenable number.

20314421 is a deficient number, since it is larger than the sum of its proper divisors (58891).

20314421 is an equidigital number, since it uses as much as digits as its factorization.

20314421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58890.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20314421 is about 4507.1522051069. The cubic root of 20314421 is about 272.8568217894.

Adding to 20314421 its reverse (12441302), we get a palindrome (32755723).

The spelling of 20314421 in words is "twenty million, three hundred fourteen thousand, four hundred twenty-one".