21314130 has 32 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 5487552.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314130 is 3141312.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 11380 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (1653750).

Almost surely, 2^21314130 is an apocalyptic number.

21314130 is an abundant number, since it is smaller than the sum of its proper divisors (31605870).

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

21314130 is a wasteful number, since it uses less digits than its factorization.

21314130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24538.

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

The square root of 21314130 is about 4616.7228636772. The cubic root of 21314130 is about 277.2612669601.

Adding to 21314130 its reverse (3141312), we get a palindrome (24455442).

The spelling of 21314130 in words is "twenty-one million, three hundred fourteen thousand, one hundred thirty".