2135713123 has 2 divisors, whose sum is σ = 2135713124. Its totient is φ = 2135713122.

The previous prime is 2135713109. The next prime is 2135713141. The reversal of 2135713123 is 3213175312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135713123 is a prime.

It is a super-2 number, since 2×2135713123² = 9122541087508826258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2135713091 and 2135713100.

It is not a weakly prime, because it can be changed into another prime (2135713523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067856561 + 1067856562.

It is an arithmetic number, because the mean of its divisors is an integer number (1067856562).

Almost surely, 2^2135713123 is an apocalyptic number.

2135713123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135713123 is an equidigital number, since it uses as much as digits as its factorization.

2135713123 is an evil number, because the sum of its binary digits is even.

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

The square root of 2135713123 is about 46213.7763334701. The cubic root of 2135713123 is about 1287.7976811038.

Adding to 2135713123 its reverse (3213175312), we get a palindrome (5348888435).

The spelling of 2135713123 in words is "two billion, one hundred thirty-five million, seven hundred thirteen thousand, one hundred twenty-three".