281381130 has 24 divisors (see below), whose sum is σ = 731591172. Its totient is φ = 75034944.

The previous prime is 281381123. The next prime is 281381137. The reversal of 281381130 is 31183182.

281381130 is a `hidden beast` number, since 281 + 381 + 1 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (281381123) and next prime (281381137).

It can be written as a sum of positive squares in 2 ways, for example, as 239351841 + 42029289 = 15471^2 + 6483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 281381094 and 281381103.

It is not an unprimeable number, because it can be changed into a prime (281381137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1563139 + ... + 1563318.

Almost surely, 2^281381130 is an apocalyptic number.

281381130 is an abundant number, since it is smaller than the sum of its proper divisors (450210042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281381130 is a wasteful number, since it uses less digits than its factorization.

281381130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126470 (or 3126467 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 281381130 is about 16774.4189169104. The cubic root of 281381130 is about 655.2871572704.

The spelling of 281381130 in words is "two hundred eighty-one million, three hundred eighty-one thousand, one hundred thirty".