21311132302013 has 8 divisors (see below), whose sum is σ = 21331106357760. Its totient is φ = 21291167523600.

The previous prime is 21311132301919. The next prime is 21311132302027. The reversal of 21311132302013 is 31020323111312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21311132302013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21311132302013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311132302043) 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, 2281328 + ... + 6915686.

It is an arithmetic number, because the mean of its divisors is an integer number (2666388294720).

Almost surely, 2^{21311132302013} is an apocalyptic number.

It is an amenable number.

21311132302013 is a deficient number, since it is larger than the sum of its proper divisors (19974055747).

21311132302013 is a wasteful number, since it uses less digits than its factorization.

21311132302013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638667.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21311132302013 its reverse (31020323111312), we get a palindrome (52331455413325).

The spelling of 21311132302013 in words is "twenty-one trillion, three hundred eleven billion, one hundred thirty-two million, three hundred two thousand, thirteen".