147307281 has 8 divisors (see below), whose sum is σ = 214265184. Its totient is φ = 89277120.

The previous prime is 147307241. The next prime is 147307283. The reversal of 147307281 is 182703741.

It is a happy number.

147307281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 147307281 - 2⁶ = 147307217 is a prime.

It is a super-2 number, since 2×147307281² = 43398870071225922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4463857 = 147307281 / (1 + 4 + 7 + 3 + 0 + 7 + 2 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (147307283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231896 + ... + 2231961.

It is an arithmetic number, because the mean of its divisors is an integer number (26783148).

Almost surely, 2^147307281 is an apocalyptic number.

147307281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

147307281 is a deficient number, since it is larger than the sum of its proper divisors (66957903).

147307281 is a wasteful number, since it uses less digits than its factorization.

147307281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463871.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 147307281 is about 12137.0210925087. The cubic root of 147307281 is about 528.1306889249.

The spelling of 147307281 in words is "one hundred forty-seven million, three hundred seven thousand, two hundred eighty-one".