21014323 has 8 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 18098280.

The previous prime is 21014303. The next prime is 21014327. The reversal of 21014323 is 32341012.

It is a happy number.

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-21014323 is a prime.

It is a super-2 number, since 2×21014323² = 883203542296658, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21014297 and 21014306.

It is not an unprimeable number, because it can be changed into a prime (21014327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50065 + ... + 50482.

It is an arithmetic number, because the mean of its divisors is an integer number (3016440).

Almost surely, 2^21014323 is an apocalyptic number.

21014323 is a deficient number, since it is larger than the sum of its proper divisors (3117197).

21014323 is a wasteful number, since it uses less digits than its factorization.

21014323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100577.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21014323 is about 4584.1381959971. The cubic root of 21014323 is about 275.9551273055.

Adding to 21014323 its reverse (32341012), we get a palindrome (53355335).

The spelling of 21014323 in words is "twenty-one million, fourteen thousand, three hundred twenty-three".