20213313 has 8 divisors (see below), whose sum is σ = 27130176. Its totient is φ = 13386000.

The previous prime is 20213309. The next prime is 20213317. The reversal of 20213313 is 31331202.

It is an interprime number because it is at equal distance from previous prime (20213309) and next prime (20213317).

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

It is not a de Polignac number, because 20213313 - 2² = 20213309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213292 and 20213301.

It is not an unprimeable number, because it can be changed into a prime (20213317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21858 + ... + 22763.

It is an arithmetic number, because the mean of its divisors is an integer number (3391272).

Almost surely, 2^20213313 is an apocalyptic number.

It is an amenable number.

20213313 is a deficient number, since it is larger than the sum of its proper divisors (6916863).

20213313 is a wasteful number, since it uses less digits than its factorization.

20213313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44775.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20213313 is about 4495.9218187153. The cubic root of 20213313 is about 272.4033852146.

Adding to 20213313 its reverse (31331202), we get a palindrome (51544515).

The spelling of 20213313 in words is "twenty million, two hundred thirteen thousand, three hundred thirteen".