21314141 has 8 divisors (see below), whose sum is σ = 22668984. Its totient is φ = 19970560.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314141 is 14141312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1768900 + 19545241 = 1330^2 + 4421^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21314141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1271 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (2833623).

Almost surely, 2^21314141 is an apocalyptic number.

It is an amenable number.

21314141 is a deficient number, since it is larger than the sum of its proper divisors (1354843).

21314141 is a wasteful number, since it uses less digits than its factorization.

21314141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631.

The product of its digits is 96, while the sum is 17.

The square root of 21314141 is about 4616.7240549983. The cubic root of 21314141 is about 277.2613146573.

Adding to 21314141 its reverse (14141312), we get a palindrome (35455453).

The spelling of 21314141 in words is "twenty-one million, three hundred fourteen thousand, one hundred forty-one".