21430113 has 8 divisors (see below), whose sum is σ = 28868448. Its totient is φ = 14139264.

The previous prime is 21430103. The next prime is 21430117. The reversal of 21430113 is 31103412.

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

It is not a de Polignac number, because 21430113 - 2¹² = 21426017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21430092 and 21430101.

It is not an unprimeable number, because it can be changed into a prime (21430117) 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, 36531 + ... + 37112.

It is an arithmetic number, because the mean of its divisors is an integer number (3608556).

Almost surely, 2^21430113 is an apocalyptic number.

It is an amenable number.

21430113 is a deficient number, since it is larger than the sum of its proper divisors (7438335).

21430113 is an equidigital number, since it uses as much as digits as its factorization.

21430113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73743.

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

The square root of 21430113 is about 4629.2670046131. The cubic root of 21430113 is about 277.7632725878.

Adding to 21430113 its reverse (31103412), we get a palindrome (52533525).

The spelling of 21430113 in words is "twenty-one million, four hundred thirty thousand, one hundred thirteen".