21261314 has 8 divisors (see below), whose sum is σ = 31911948. Its totient is φ = 10624000.

The previous prime is 21261293. The next prime is 21261337. The reversal of 21261314 is 41316212.

It can be written as a sum of positive squares in 2 ways, for example, as 20295025 + 966289 = 4505^2 + 983^2 .

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

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, 3314 + ... + 7314.

Almost surely, 2^21261314 is an apocalyptic number.

21261314 is a deficient number, since it is larger than the sum of its proper divisors (10650634).

21261314 is a wasteful number, since it uses less digits than its factorization.

21261314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660.

The product of its digits is 288, while the sum is 20.

The square root of 21261314 is about 4610.9992409455. Note that the first 3 decimals coincide. The cubic root of 21261314 is about 277.0320615228.

Adding to 21261314 its reverse (41316212), we get a palindrome (62577526).

The spelling of 21261314 in words is "twenty-one million, two hundred sixty-one thousand, three hundred fourteen".