21341013 has 8 divisors (see below), whose sum is σ = 29436000. Its totient is φ = 13736688.

The previous prime is 21340931. The next prime is 21341017. The reversal of 21341013 is 31014312.

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

It is not a de Polignac number, because 21341013 - 2¹³ = 21332821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21340983 and 21341001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122563 + ... + 122736.

It is an arithmetic number, because the mean of its divisors is an integer number (3679500).

Almost surely, 2^21341013 is an apocalyptic number.

It is an amenable number.

21341013 is a deficient number, since it is larger than the sum of its proper divisors (8094987).

21341013 is a wasteful number, since it uses less digits than its factorization.

21341013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245331.

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

The square root of 21341013 is about 4619.6334270156. The cubic root of 21341013 is about 277.3777856443.

Adding to 21341013 its reverse (31014312), we get a palindrome (52355325).

The spelling of 21341013 in words is "twenty-one million, three hundred forty-one thousand, thirteen".