308934344693 has 4 divisors (see below), whose sum is σ = 332698525068. Its totient is φ = 285170164320.

The previous prime is 308934344659. The next prime is 308934344749. The reversal of 308934344693 is 396443439803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 396443439803 = 89657 ⋅4421779.

It can be written as a sum of positive squares in 2 ways, for example, as 183545410084 + 125388934609 = 428422^2 + 354103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308934344693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308934344623) 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, 11882090168 + ... + 11882090193.

It is an arithmetic number, because the mean of its divisors is an integer number (83174631267).

Almost surely, 2^308934344693 is an apocalyptic number.

It is an amenable number.

308934344693 is a deficient number, since it is larger than the sum of its proper divisors (23764180375).

308934344693 is a wasteful number, since it uses less digits than its factorization.

308934344693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23764180374.

The product of its (nonzero) digits is 20155392, while the sum is 56.

The spelling of 308934344693 in words is "three hundred eight billion, nine hundred thirty-four million, three hundred forty-four thousand, six hundred ninety-three".