309358947347 has 4 divisors (see below), whose sum is σ = 317720000016. Its totient is φ = 300997894680.

The previous prime is 309358947343. The next prime is 309358947353. The reversal of 309358947347 is 743749853903.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 309358947347 - 2² = 309358947343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 309358947347.

It is not an unprimeable number, because it can be changed into a prime (309358947343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4180526279 + ... + 4180526352.

It is an arithmetic number, because the mean of its divisors is an integer number (79430000004).

Almost surely, 2^309358947347 is an apocalyptic number.

309358947347 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

309358947347 is a deficient number, since it is larger than the sum of its proper divisors (8361052669).

309358947347 is an equidigital number, since it uses as much as digits as its factorization.

309358947347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361052668.

The product of its (nonzero) digits is 68584320, while the sum is 62.

The spelling of 309358947347 in words is "three hundred nine billion, three hundred fifty-eight million, nine hundred forty-seven thousand, three hundred forty-seven".