281216151 has 8 divisors (see below), whose sum is σ = 416616560. Its totient is φ = 187477416.

The previous prime is 281216149. The next prime is 281216153. The reversal of 281216151 is 151612182.

281216151 is a `hidden beast` number, since 28 + 1 + 21 + 615 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (281216149) and next prime (281216153).

It is not a de Polignac number, because 281216151 - 2¹ = 281216149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 10415413 = 281216151 / (2 + 8 + 1 + 2 + 1 + 6 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281216153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5207680 + ... + 5207733.

It is an arithmetic number, because the mean of its divisors is an integer number (52077070).

Almost surely, 2^281216151 is an apocalyptic number.

281216151 is a deficient number, since it is larger than the sum of its proper divisors (135400409).

281216151 is a wasteful number, since it uses less digits than its factorization.

281216151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415422 (or 10415416 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 281216151 is about 16769.5006186827. The cubic root of 281216151 is about 655.1590632087.

The spelling of 281216151 in words is "two hundred eighty-one million, two hundred sixteen thousand, one hundred fifty-one".