21313130303 has 2 divisors, whose sum is σ = 21313130304. Its totient is φ = 21313130302.

The previous prime is 21313130291. The next prime is 21313130317. The reversal of 21313130303 is 30303131312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21313130303 - 2¹⁴ = 21313113919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21313130353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656565151 + 10656565152.

It is an arithmetic number, because the mean of its divisors is an integer number (10656565152).

Almost surely, 2^21313130303 is an apocalyptic number.

21313130303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313130303 is an equidigital number, since it uses as much as digits as its factorization.

21313130303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 21313130303 its reverse (30303131312), we get a palindrome (51616261615).

The spelling of 21313130303 in words is "twenty-one billion, three hundred thirteen million, one hundred thirty thousand, three hundred three".