20314213 has 4 divisors (see below), whose sum is σ = 20450700. Its totient is φ = 20177728.

The previous prime is 20314171. The next prime is 20314219. The reversal of 20314213 is 31241302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31241302 = 2 ⋅15620651.

It can be written as a sum of positive squares in 2 ways, for example, as 3323329 + 16990884 = 1823^2 + 4122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20314213 - 2⁹ = 20313701 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 (20314219) 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, 68020 + ... + 68317.

It is an arithmetic number, because the mean of its divisors is an integer number (5112675).

Almost surely, 2^20314213 is an apocalyptic number.

It is an amenable number.

20314213 is a deficient number, since it is larger than the sum of its proper divisors (136487).

20314213 is a wasteful number, since it uses less digits than its factorization.

20314213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136486.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20314213 is about 4507.1291306107. The cubic root of 20314213 is about 272.8558905230.

Adding to 20314213 its reverse (31241302), we get a palindrome (51555515).

The spelling of 20314213 in words is "twenty million, three hundred fourteen thousand, two hundred thirteen".