20234213 has 6 divisors (see below), whose sum is σ = 20520594. Its totient is φ = 19951776.

The previous prime is 20234189. The next prime is 20234231. The reversal of 20234213 is 31243202.

It can be written as a sum of positive squares in 3 ways, for example, as 315844 + 19918369 = 562^2 + 4463^2 .

It is not a de Polignac number, because 20234213 - 2⁸ = 20233957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20234191 and 20234200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3431 + ... + 7227.

It is an arithmetic number, because the mean of its divisors is an integer number (3420099).

Almost surely, 2^20234213 is an apocalyptic number.

It is an amenable number.

20234213 is a deficient number, since it is larger than the sum of its proper divisors (286381).

20234213 is an frugal number, since it uses more digits than its factorization.

20234213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943 (or 3870 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20234213 is about 4498.2455468771. The cubic root of 20234213 is about 272.4972387005.

Adding to 20234213 its reverse (31243202), we get a palindrome (51477415).

The spelling of 20234213 in words is "twenty million, two hundred thirty-four thousand, two hundred thirteen".