21313262 has 8 divisors (see below), whose sum is σ = 32001600. Its totient is φ = 10646064.

The previous prime is 21313247. The next prime is 21313283. The reversal of 21313262 is 26231312.

It is a happy number.

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

It is a congruent number.

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, 2462 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (4000200).

Almost surely, 2^21313262 is an apocalyptic number.

21313262 is a deficient number, since it is larger than the sum of its proper divisors (10688338).

21313262 is a wasteful number, since it uses less digits than its factorization.

21313262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570.

The product of its digits is 432, while the sum is 20.

The square root of 21313262 is about 4616.6288566442. The cubic root of 21313262 is about 277.2575031652.

Adding to 21313262 its reverse (26231312), we get a palindrome (47544574).

The spelling of 21313262 in words is "twenty-one million, three hundred thirteen thousand, two hundred sixty-two".