147320840309 has 4 divisors (see below), whose sum is σ = 147321820620. Its totient is φ = 147319860000.

The previous prime is 147320840291. The next prime is 147320840339. The reversal of 147320840309 is 903048023741.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 903048023741 = 31 ⋅29130581411.

It can be written as a sum of positive squares in 2 ways, for example, as 108283774225 + 39037066084 = 329065^2 + 197578^2 .

It is a cyclic number.

It is not a de Polignac number, because 147320840309 - 2¹² = 147320836213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147320840339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212192 + ... + 582809.

It is an arithmetic number, because the mean of its divisors is an integer number (36830455155).

Almost surely, 2^147320840309 is an apocalyptic number.

It is an amenable number.

147320840309 is a deficient number, since it is larger than the sum of its proper divisors (980311).

147320840309 is an equidigital number, since it uses as much as digits as its factorization.

147320840309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980310.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 147320840309 in words is "one hundred forty-seven billion, three hundred twenty million, eight hundred forty thousand, three hundred nine".