21300132313 has 2 divisors, whose sum is σ = 21300132314. Its totient is φ = 21300132312.

The previous prime is 21300132311. The next prime is 21300132319. The reversal of 21300132313 is 31323100312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12653550144 + 8646582169 = 112488^2 + 92987^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300132313 - 2¹ = 21300132311 is a prime.

Together with 21300132311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21300132311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650066156 + 10650066157.

It is an arithmetic number, because the mean of its divisors is an integer number (10650066157).

Almost surely, 2^21300132313 is an apocalyptic number.

It is an amenable number.

21300132313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300132313 is an equidigital number, since it uses as much as digits as its factorization.

21300132313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21300132313 its reverse (31323100312), we get a palindrome (52623232625).

The spelling of 21300132313 in words is "twenty-one billion, three hundred million, one hundred thirty-two thousand, three hundred thirteen".