2100031434123 has 16 divisors (see below), whose sum is σ = 3368471473920. Its totient is φ = 1136859122016.

The previous prime is 2100031434113. The next prime is 2100031434157. The reversal of 2100031434123 is 3214341300012.

It is a happy number.

It is not a de Polignac number, because 2100031434123 - 2⁸ = 2100031433867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100031434093 and 2100031434102.

It is not an unprimeable number, because it can be changed into a prime (2100031434113) 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, 2631617940 + ... + 2631618737.

It is an arithmetic number, because the mean of its divisors is an integer number (210529467120).

Almost surely, 2^{2100031434123} is an apocalyptic number.

2100031434123 is a deficient number, since it is larger than the sum of its proper divisors (1268440039797).

2100031434123 is a wasteful number, since it uses less digits than its factorization.

2100031434123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263236706.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2100031434123 its reverse (3214341300012), we get a palindrome (5314372734135).

The spelling of 2100031434123 in words is "two trillion, one hundred billion, thirty-one million, four hundred thirty-four thousand, one hundred twenty-three".