2136823 has 4 divisors (see below), whose sum is σ = 2301208. Its totient is φ = 1972440.

The previous prime is 2136817. The next prime is 2136829. The reversal of 2136823 is 3286312.

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

It is an interprime number because it is at equal distance from previous prime (2136817) and next prime (2136829).

It is a cyclic number.

It is not a de Polignac number, because 2136823 - 2⁹ = 2136311 is a prime.

2136823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136829) 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, 82173 + ... + 82198.

It is an arithmetic number, because the mean of its divisors is an integer number (575302).

2^2136823 is an apocalyptic number.

2136823 is a deficient number, since it is larger than the sum of its proper divisors (164385).

2136823 is a wasteful number, since it uses less digits than its factorization.

2136823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164384.

The product of its digits is 1728, while the sum is 25.

The square root of 2136823 is about 1461.7876042709. The cubic root of 2136823 is about 128.8020721282.

The spelling of 2136823 in words is "two million, one hundred thirty-six thousand, eight hundred twenty-three".