21313302 has 8 divisors (see below), whose sum is σ = 42626616. Its totient is φ = 7104432.

The previous prime is 21313301. The next prime is 21313333. The reversal of 21313302 is 20331312.

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

21313302 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776103 + ... + 1776114.

It is an arithmetic number, because the mean of its divisors is an integer number (5328327).

Almost surely, 2^21313302 is an apocalyptic number.

21313302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21313302 is a wasteful number, since it uses less digits than its factorization.

21313302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552222.

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

The square root of 21313302 is about 4616.6331888076. The cubic root of 21313302 is about 277.2576766142.

Adding to 21313302 its reverse (20331312), we get a palindrome (41644614).

The spelling of 21313302 in words is "twenty-one million, three hundred thirteen thousand, three hundred two".