2136281 has 8 divisors (see below), whose sum is σ = 2481984. Its totient is φ = 1800720.

The previous prime is 2136247. The next prime is 2136287. The reversal of 2136281 is 1826312.

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

It is a de Polignac number, because none of the positive numbers 2^k-2136281 is a prime.

It is a super-2 number, since 2×2136281² = 9127393021922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2136287) 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, 2075 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (310248).

2^2136281 is an apocalyptic number.

It is an amenable number.

2136281 is a deficient number, since it is larger than the sum of its proper divisors (345703).

2136281 is an equidigital number, since it uses as much as digits as its factorization.

2136281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071.

The product of its digits is 576, while the sum is 23.

The square root of 2136281 is about 1461.6022030635. The cubic root of 2136281 is about 128.7911810957.

The spelling of 2136281 in words is "two million, one hundred thirty-six thousand, two hundred eighty-one".