13131322320101 has 4 divisors (see below), whose sum is σ = 13164068760204. Its totient is φ = 13098575880000.

The previous prime is 13131322320097. The next prime is 13131322320169. The reversal of 13131322320101 is 10102322313131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8985761635876 + 4145560684225 = 2997626^2 + 2036065^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131322320101 - 2² = 13131322320097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131322320301) 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, 16373219450 + ... + 16373220251.

It is an arithmetic number, because the mean of its divisors is an integer number (3291017190051).

Almost surely, 2^{13131322320101} is an apocalyptic number.

It is an amenable number.

13131322320101 is a deficient number, since it is larger than the sum of its proper divisors (32746440103).

13131322320101 is an equidigital number, since it uses as much as digits as its factorization.

13131322320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32746440102.

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

Adding to 13131322320101 its reverse (10102322313131), we get a palindrome (23233644633232).

The spelling of 13131322320101 in words is "thirteen trillion, one hundred thirty-one billion, three hundred twenty-two million, three hundred twenty thousand, one hundred one".