21313162 has 8 divisors (see below), whose sum is σ = 34428996. Its totient is φ = 9836832.

The previous prime is 21313133. The next prime is 21313181. The reversal of 21313162 is 26131312.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 982081 = 4509^2 + 991^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 409843 + ... + 409894.

Almost surely, 2^21313162 is an apocalyptic number.

21313162 is a deficient number, since it is larger than the sum of its proper divisors (13115834).

21313162 is a wasteful number, since it uses less digits than its factorization.

21313162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819752.

The product of its digits is 216, while the sum is 19.

The square root of 21313162 is about 4616.6180262179. The cubic root of 21313162 is about 277.2570695417.

Adding to 21313162 its reverse (26131312), we get a palindrome (47444474).

The spelling of 21313162 in words is "twenty-one million, three hundred thirteen thousand, one hundred sixty-two".