22313213 has 4 divisors (see below), whose sum is σ = 24029628. Its totient is φ = 20596800.

The previous prime is 22313191. The next prime is 22313219. The reversal of 22313213 is 31231322.

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 9078169 + 13235044 = 3013^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 22313213 - 2¹⁸ = 22051069 is a prime.

It is a super-3 number, since 3×22313213³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22313191 and 22313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22313219) 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, 858188 + ... + 858213.

It is an arithmetic number, because the mean of its divisors is an integer number (6007407).

Almost surely, 2^22313213 is an apocalyptic number.

It is an amenable number.

22313213 is a deficient number, since it is larger than the sum of its proper divisors (1716415).

22313213 is a wasteful number, since it uses less digits than its factorization.

22313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716414.

The product of its digits is 216, while the sum is 17.

The square root of 22313213 is about 4723.6863782432. The cubic root of 22313213 is about 281.5274221977.

Adding to 22313213 its reverse (31231322), we get a palindrome (53544535).

The spelling of 22313213 in words is "twenty-two million, three hundred thirteen thousand, two hundred thirteen".