281136364 has 6 divisors (see below), whose sum is σ = 491988644. Its totient is φ = 140568180.

The previous prime is 281136347. The next prime is 281136377. The reversal of 281136364 is 463631182.

It is a happy number.

281136364 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 35142042 + ... + 35142049.

Almost surely, 2^281136364 is an apocalyptic number.

It is an amenable number.

281136364 is a deficient number, since it is larger than the sum of its proper divisors (210852280).

281136364 is a wasteful number, since it uses less digits than its factorization.

281136364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70284095 (or 70284093 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 281136364 is about 16767.1215180185. The cubic root of 281136364 is about 655.0970964968.

The spelling of 281136364 in words is "two hundred eighty-one million, one hundred thirty-six thousand, three hundred sixty-four".