2133481 has 8 divisors (see below), whose sum is σ = 2475200. Its totient is φ = 1801008.

The previous prime is 2133463. The next prime is 2133487. The reversal of 2133481 is 1843312.

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 2133481 - 2¹⁵ = 2100713 is a prime.

It is a super-2 number, since 2×2133481² = 9103482354722, which contains 22 as substring.

It is an Ulam number.

2133481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2133487) 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, 1806 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (309400).

2^2133481 is an apocalyptic number.

It is an amenable number.

2133481 is a deficient number, since it is larger than the sum of its proper divisors (341719).

2133481 is an equidigital number, since it uses as much as digits as its factorization.

2133481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623.

The product of its digits is 576, while the sum is 22.

The square root of 2133481 is about 1460.6440360334. The cubic root of 2133481 is about 128.7348880997.

Adding to 2133481 its reverse (1843312), we get a palindrome (3976793).

The spelling of 2133481 in words is "two million, one hundred thirty-three thousand, four hundred eighty-one".