2101131321323 has 4 divisors (see below), whose sum is σ = 2211717180360. Its totient is φ = 1990545462288.

The previous prime is 2101131321293. The next prime is 2101131321329. The reversal of 2101131321323 is 3231231311012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101131321323 - 2¹⁴ = 2101131304939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101131321329) 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, 55292929490 + ... + 55292929527.

It is an arithmetic number, because the mean of its divisors is an integer number (552929295090).

Almost surely, 2^{2101131321323} is an apocalyptic number.

2101131321323 is a deficient number, since it is larger than the sum of its proper divisors (110585859037).

2101131321323 is a wasteful number, since it uses less digits than its factorization.

2101131321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110585859036.

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

Adding to 2101131321323 its reverse (3231231311012), we get a palindrome (5332362632335).

The spelling of 2101131321323 in words is "two trillion, one hundred one billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred twenty-three".