309302603473 has 2 divisors, whose sum is σ = 309302603474. Its totient is φ = 309302603472.

The previous prime is 309302603471. The next prime is 309302603483. The reversal of 309302603473 is 374306203903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228161941569 + 81140661904 = 477663^2 + 284852^2 .

It is an emirp because it is prime and its reverse (374306203903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 309302603473 - 2¹ = 309302603471 is a prime.

Together with 309302603471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (309302603471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154651301736 + 154651301737.

It is an arithmetic number, because the mean of its divisors is an integer number (154651301737).

Almost surely, 2^309302603473 is an apocalyptic number.

It is an amenable number.

309302603473 is a deficient number, since it is larger than the sum of its proper divisors (1).

309302603473 is an equidigital number, since it uses as much as digits as its factorization.

309302603473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 40.

The spelling of 309302603473 in words is "three hundred nine billion, three hundred two million, six hundred three thousand, four hundred seventy-three".