309803097601 has 4 divisors (see below), whose sum is σ = 309804295104. Its totient is φ = 309801900100.

The previous prime is 309803097587. The next prime is 309803097607. The reversal of 309803097601 is 106790308903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 106790308903 = 15137 ⋅7054919.

It is a cyclic number.

It is not a de Polignac number, because 309803097601 - 2¹⁹ = 309802573313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309803097607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31645 + ... + 787786.

It is an arithmetic number, because the mean of its divisors is an integer number (77451073776).

Almost surely, 2^309803097601 is an apocalyptic number.

It is an amenable number.

309803097601 is a deficient number, since it is larger than the sum of its proper divisors (1197503).

309803097601 is an equidigital number, since it uses as much as digits as its factorization.

309803097601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197502.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 309803097601 in words is "three hundred nine billion, eight hundred three million, ninety-seven thousand, six hundred one".