2135977723 has 4 divisors (see below), whose sum is σ = 2330157528. Its totient is φ = 1941797920.

The previous prime is 2135977721. The next prime is 2135977741. The reversal of 2135977723 is 3277795312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2135977723 - 2¹ = 2135977721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135977721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97089886 + ... + 97089907.

It is an arithmetic number, because the mean of its divisors is an integer number (582539382).

Almost surely, 2^2135977723 is an apocalyptic number.

2135977723 is a deficient number, since it is larger than the sum of its proper divisors (194179805).

2135977723 is a wasteful number, since it uses less digits than its factorization.

2135977723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194179804.

The product of its digits is 555660, while the sum is 46.

The square root of 2135977723 is about 46216.6390275191. The cubic root of 2135977723 is about 1287.8508619659.

The spelling of 2135977723 in words is "two billion, one hundred thirty-five million, nine hundred seventy-seven thousand, seven hundred twenty-three".