21413103 has 16 divisors (see below), whose sum is σ = 29145600. Its totient is φ = 13980960.

The previous prime is 21413101. The next prime is 21413123. The reversal of 21413103 is 30131412.

It is not a de Polignac number, because 21413103 - 2¹ = 21413101 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48558 + ... + 48996.

It is an arithmetic number, because the mean of its divisors is an integer number (1821600).

Almost surely, 2^21413103 is an apocalyptic number.

21413103 is a deficient number, since it is larger than the sum of its proper divisors (7732497).

21413103 is a wasteful number, since it uses less digits than its factorization.

21413103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

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

The square root of 21413103 is about 4627.4294159933. The cubic root of 21413103 is about 277.6897622599.

Adding to 21413103 its reverse (30131412), we get a palindrome (51544515).

The spelling of 21413103 in words is "twenty-one million, four hundred thirteen thousand, one hundred three".