2137128823 has 2 divisors, whose sum is σ = 2137128824. Its totient is φ = 2137128822.

The previous prime is 2137128817. The next prime is 2137128841. The reversal of 2137128823 is 3288217312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2137128823 is a prime.

It is a super-3 number, since 3×2137128823³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2137128923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068564411 + 1068564412.

It is an arithmetic number, because the mean of its divisors is an integer number (1068564412).

Almost surely, 2^2137128823 is an apocalyptic number.

2137128823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137128823 is an equidigital number, since it uses as much as digits as its factorization.

2137128823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 2137128823 is about 46229.0906572907. The cubic root of 2137128823 is about 1288.0821657056.

The spelling of 2137128823 in words is "two billion, one hundred thirty-seven million, one hundred twenty-eight thousand, eight hundred twenty-three".