21002314 has 8 divisors (see below), whose sum is σ = 32519808. Its totient is φ = 10162380.

The previous prime is 21002299. The next prime is 21002323. The reversal of 21002314 is 41320012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21002294 and 21002303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169312 + ... + 169435.

It is an arithmetic number, because the mean of its divisors is an integer number (4064976).

Almost surely, 2^21002314 is an apocalyptic number.

21002314 is a deficient number, since it is larger than the sum of its proper divisors (11517494).

21002314 is a wasteful number, since it uses less digits than its factorization.

21002314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338780.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21002314 is about 4582.8281661001. The cubic root of 21002314 is about 275.9025508382.

Adding to 21002314 its reverse (41320012), we get a palindrome (62322326).

It can be divided in two parts, 21002 and 314, that added together give a square (21316 = 146²).

The spelling of 21002314 in words is "twenty-one million, two thousand, three hundred fourteen".