2131011020123 has 8 divisors (see below), whose sum is σ = 2256413406192. Its totient is φ = 2005614055936.

The previous prime is 2131011020113. The next prime is 2131011020137. The reversal of 2131011020123 is 3210201101312.

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

It is not a de Polignac number, because 2131011020123 - 2²⁰ = 2131009971547 is a prime.

It is a super-2 number, since 2×2131011020123² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131011020113) 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, 531965 + ... + 2131902.

It is an arithmetic number, because the mean of its divisors is an integer number (282051675774).

Almost surely, 2^{2131011020123} is an apocalyptic number.

2131011020123 is a deficient number, since it is larger than the sum of its proper divisors (125402386069).

2131011020123 is a wasteful number, since it uses less digits than its factorization.

2131011020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710941.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2131011020123 its reverse (3210201101312), we get a palindrome (5341212121435).

The spelling of 2131011020123 in words is "two trillion, one hundred thirty-one billion, eleven million, twenty thousand, one hundred twenty-three".