21323130130013 has 4 divisors (see below), whose sum is σ = 21323210470848. Its totient is φ = 21323049789180.

The previous prime is 21323130129937. The next prime is 21323130130033. The reversal of 21323130130013 is 31003103132312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21323130130013 - 2¹⁸ = 21323129867869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323130130033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39770981 + ... + 40303562.

It is an arithmetic number, because the mean of its divisors is an integer number (5330802617712).

Almost surely, 2^{21323130130013} is an apocalyptic number.

It is an amenable number.

21323130130013 is a deficient number, since it is larger than the sum of its proper divisors (80340835).

21323130130013 is an equidigital number, since it uses as much as digits as its factorization.

21323130130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80340834.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21323130130013 its reverse (31003103132312), we get a palindrome (52326233262325).

The spelling of 21323130130013 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirty million, one hundred thirty thousand, thirteen".