21313014 has 16 divisors (see below), whose sum is σ = 42674160. Its totient is φ = 7096320.

The previous prime is 21313001. The next prime is 21313021. The reversal of 21313014 is 41031312.

It is a junction number, because it is equal to n+sod(n) for n = 21312984 and 21313002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6582 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (2667135).

Almost surely, 2^21313014 is an apocalyptic number.

21313014 is an abundant number, since it is smaller than the sum of its proper divisors (21361146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313014 is a wasteful number, since it uses less digits than its factorization.

21313014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 21313014 is about 4616.6019971403. The cubic root of 21313014 is about 277.2564277764.

Adding to 21313014 its reverse (41031312), we get a palindrome (62344326).

The spelling of 21313014 in words is "twenty-one million, three hundred thirteen thousand, fourteen".