281132330 has 8 divisors (see below), whose sum is σ = 506038212. Its totient is φ = 112452928.

The previous prime is 281132329. The next prime is 281132363. The reversal of 281132330 is 33231182.

It can be written as a sum of positive squares in 2 ways, for example, as 263835049 + 17297281 = 16243^2 + 4159^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 281132296 and 281132305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14056607 + ... + 14056626.

Almost surely, 2^281132330 is an apocalyptic number.

281132330 is a deficient number, since it is larger than the sum of its proper divisors (224905882).

281132330 is a wasteful number, since it uses less digits than its factorization.

281132330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28113240.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 281132330 is about 16767.0012226397. The cubic root of 281132330 is about 655.0939631723.

The spelling of 281132330 in words is "two hundred eighty-one million, one hundred thirty-two thousand, three hundred thirty".