21310041 has 8 divisors (see below), whose sum is σ = 29393280. Its totient is φ = 13716752.

The previous prime is 21310021. The next prime is 21310043. The reversal of 21310041 is 14001312.

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 not a de Polignac number, because 21310041 - 2⁷ = 21309913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21309999 and 21310026.

It is not an unprimeable number, because it can be changed into a prime (21310043) 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, 122385 + ... + 122558.

It is an arithmetic number, because the mean of its divisors is an integer number (3674160).

Almost surely, 2^21310041 is an apocalyptic number.

It is an amenable number.

21310041 is a deficient number, since it is larger than the sum of its proper divisors (8083239).

21310041 is a wasteful number, since it uses less digits than its factorization.

21310041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244975.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21310041 is about 4616.2799958408. The cubic root of 21310041 is about 277.2435354705.

Adding to 21310041 its reverse (14001312), we get a palindrome (35311353).

The spelling of 21310041 in words is "twenty-one million, three hundred ten thousand, forty-one".