21313714 has 4 divisors (see below), whose sum is σ = 31970574. Its totient is φ = 10656856.

The previous prime is 21313697. The next prime is 21313729. The reversal of 21313714 is 41731312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 765625 = 4533^2 + 875^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5328427 + ... + 5328430.

Almost surely, 2^21313714 is an apocalyptic number.

21313714 is a deficient number, since it is larger than the sum of its proper divisors (10656860).

21313714 is a wasteful number, since it uses less digits than its factorization.

21313714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10656859.

The product of its digits is 504, while the sum is 22.

The square root of 21313714 is about 4616.6778098542. The cubic root of 21313714 is about 277.2594631264.

The spelling of 21313714 in words is "twenty-one million, three hundred thirteen thousand, seven hundred fourteen".