2101313323123 has 16 divisors (see below), whose sum is σ = 2498872135680. Its totient is φ = 1729543417056.

The previous prime is 2101313323093. The next prime is 2101313323129. The reversal of 2101313323123 is 3213233131012.

It is not a de Polignac number, because 2101313323123 - 2⁵ = 2101313323091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101313323129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60237003 + ... + 60271876.

It is an arithmetic number, because the mean of its divisors is an integer number (156179508480).

Almost surely, 2^{2101313323123} is an apocalyptic number.

2101313323123 is a deficient number, since it is larger than the sum of its proper divisors (397558812557).

2101313323123 is a wasteful number, since it uses less digits than its factorization.

2101313323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120508986.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2101313323123 its reverse (3213233131012), we get a palindrome (5314546454135).

The spelling of 2101313323123 in words is "two trillion, one hundred one billion, three hundred thirteen million, three hundred twenty-three thousand, one hundred twenty-three".