22002313 has 8 divisors (see below), whose sum is σ = 22393800. Its totient is φ = 21614208.

The previous prime is 22002311. The next prime is 22002319. The reversal of 22002313 is 31320022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 915849 + 21086464 = 957^2 + 4592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22002313 - 2¹ = 22002311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002293 and 22002302.

It is not an unprimeable number, because it can be changed into a prime (22002311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14683 + ... + 16111.

It is an arithmetic number, because the mean of its divisors is an integer number (2799225).

Almost surely, 2^22002313 is an apocalyptic number.

It is an amenable number.

22002313 is a deficient number, since it is larger than the sum of its proper divisors (391487).

22002313 is a wasteful number, since it uses less digits than its factorization.

22002313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22002313 is about 4690.6623199715. The cubic root of 22002313 is about 280.2137525956.

Adding to 22002313 its reverse (31320022), we get a palindrome (53322335).

The spelling of 22002313 in words is "twenty-two million, two thousand, three hundred thirteen".