32328281 has 2 divisors, whose sum is σ = 32328282. Its totient is φ = 32328280.

The previous prime is 32328277. The next prime is 32328293. The reversal of 32328281 is 18282323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32035600 + 292681 = 5660^2 + 541^2 .

It is an emirp because it is prime and its reverse (18282323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32328281 - 2² = 32328277 is a prime.

It is a super-2 number, since 2×32328281² = 2090235504829922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32328211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16164140 + 16164141.

It is an arithmetic number, because the mean of its divisors is an integer number (16164141).

Almost surely, 2^32328281 is an apocalyptic number.

It is an amenable number.

32328281 is a deficient number, since it is larger than the sum of its proper divisors (1).

32328281 is an equidigital number, since it uses as much as digits as its factorization.

32328281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 32328281 is about 5685.7964261834. The cubic root of 32328281 is about 318.5621722585.

The spelling of 32328281 in words is "thirty-two million, three hundred twenty-eight thousand, two hundred eighty-one".