2133813 has 8 divisors (see below), whose sum is σ = 3103776. Its totient is φ = 1293200.

The previous prime is 2133811. The next prime is 2133821. The reversal of 2133813 is 3183312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2133813 - 2¹ = 2133811 is a prime.

2133813 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2133813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32298 + ... + 32363.

It is an arithmetic number, because the mean of its divisors is an integer number (387972).

2^2133813 is an apocalyptic number.

It is an amenable number.

2133813 is a deficient number, since it is larger than the sum of its proper divisors (969963).

2133813 is a wasteful number, since it uses less digits than its factorization.

2133813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64675.

The product of its digits is 432, while the sum is 21.

The square root of 2133813 is about 1460.7576801099. The cubic root of 2133813 is about 128.7415654135.

The spelling of 2133813 in words is "two million, one hundred thirty-three thousand, eight hundred thirteen".