147321 has 6 divisors (see below), whose sum is σ = 212810. Its totient is φ = 98208.

The previous prime is 147319. The next prime is 147331. The reversal of 147321 is 123741.

It can be written as a sum of positive squares in only one way, i.e., 114921 + 32400 = 339^2 + 180^2 .

It is not a de Polignac number, because 147321 - 2¹ = 147319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147294 and 147303.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147321.

It is not an unprimeable number, because it can be changed into a prime (147311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8176 + ... + 8193.

2¹⁴⁷³²¹ is an apocalyptic number.

It is an amenable number.

147321 is a deficient number, since it is larger than the sum of its proper divisors (65489).

147321 is a wasteful number, since it uses less digits than its factorization.

147321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375 (or 16372 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 147321 is about 383.8241784984. The cubic root of 147321 is about 52.8147083679.

Subtracting from 147321 its product of digits (168), we obtain a triangular number (147153 = T₅₄₂).

The spelling of 147321 in words is "one hundred forty-seven thousand, three hundred twenty-one", and thus it is an iban number.