2135137123 has 6 divisors (see below), whose sum is σ = 2483730996. Its totient is φ = 1830117492.

The previous prime is 2135137111. The next prime is 2135137129. The reversal of 2135137123 is 3217315312.

It is not a de Polignac number, because 2135137123 - 2²⁹ = 1598266211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2135137091 and 2135137100.

It is not an unprimeable number, because it can be changed into a prime (2135137129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21787065 + ... + 21787162.

It is an arithmetic number, because the mean of its divisors is an integer number (413955166).

Almost surely, 2^2135137123 is an apocalyptic number.

2135137123 is a deficient number, since it is larger than the sum of its proper divisors (348593873).

2135137123 is an equidigital number, since it uses as much as digits as its factorization.

2135137123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43574241 (or 43574234 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 2135137123 is about 46207.5440052812. The cubic root of 2135137123 is about 1287.6818980505.

The spelling of 2135137123 in words is "two billion, one hundred thirty-five million, one hundred thirty-seven thousand, one hundred twenty-three".