2031100012123 has 24 divisors (see below), whose sum is σ = 2513748902400. Its totient is φ = 1606897435104.

The previous prime is 2031100012013. The next prime is 2031100012241. The reversal of 2031100012123 is 3212100011302.

It is not a de Polignac number, because 2031100012123 - 2²¹ = 2031097914971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031100012097 and 2031100012106.

It is not an unprimeable number, because it can be changed into a prime (2031100012523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16689468 + ... + 16810726.

It is an arithmetic number, because the mean of its divisors is an integer number (104739537600).

Almost surely, 2^{2031100012123} is an apocalyptic number.

2031100012123 is a deficient number, since it is larger than the sum of its proper divisors (482648890277).

2031100012123 is a wasteful number, since it uses less digits than its factorization.

2031100012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135451 (or 135438 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2031100012123 its reverse (3212100011302), we get a palindrome (5243200023425).

The spelling of 2031100012123 in words is "two trillion, thirty-one billion, one hundred million, twelve thousand, one hundred twenty-three".