2132281 has 2 divisors, whose sum is σ = 2132282. Its totient is φ = 2132280.

The previous prime is 2132279. The next prime is 2132303. The reversal of 2132281 is 1822312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681 + 3600 = 1459^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132281 - 2¹ = 2132279 is a prime.

It is a super-2 number, since 2×2132281² = 9093244525922, which contains 22 as substring.

Together with 2132279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2132231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066140 + 1066141.

It is an arithmetic number, because the mean of its divisors is an integer number (1066141).

2^2132281 is an apocalyptic number.

It is an amenable number.

2132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132281 is an equidigital number, since it uses as much as digits as its factorization.

2132281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 2132281 is about 1460.2332005539. The cubic root of 2132281 is about 128.7107474522.

Adding to 2132281 its reverse (1822312), we get a palindrome (3954593).

The spelling of 2132281 in words is "two million, one hundred thirty-two thousand, two hundred eighty-one".