2101311001023 has 32 divisors (see below), whose sum is σ = 3028398744000. Its totient is φ = 1288349853696.

The previous prime is 2101311001003. The next prime is 2101311001037. The reversal of 2101311001023 is 3201001131012.

It is a happy number.

It is not a de Polignac number, because 2101311001023 - 2²⁵ = 2101277446591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101311000993 and 2101311001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101311001003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16665111 + ... + 16790727.

It is an arithmetic number, because the mean of its divisors is an integer number (94637460750).

Almost surely, 2^{2101311001023} is an apocalyptic number.

2101311001023 is a deficient number, since it is larger than the sum of its proper divisors (927087742977).

2101311001023 is a wasteful number, since it uses less digits than its factorization.

2101311001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127211.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2101311001023 its reverse (3201001131012), we get a palindrome (5302312132035).

The spelling of 2101311001023 in words is "two trillion, one hundred one billion, three hundred eleven million, one thousand, twenty-three".