306138318331811 has 8 divisors (see below), whose sum is σ = 350298517728864. Its totient is φ = 262084657415040.

The previous prime is 306138318331793. The next prime is 306138318331819. The reversal of 306138318331811 is 118133813831603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 306138318331811 - 2¹⁰ = 306138318330787 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 306138318331811.

It is not an unprimeable number, because it can be changed into a prime (306138318331819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26634613910 + ... + 26634625403.

It is an arithmetic number, because the mean of its divisors is an integer number (43787314716108).

Almost surely, 2^{306138318331811} is an apocalyptic number.

306138318331811 is a deficient number, since it is larger than the sum of its proper divisors (44160199397053).

306138318331811 is an equidigital number, since it uses as much as digits as its factorization.

306138318331811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53269240141.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 306138318331811 in words is "three hundred six trillion, one hundred thirty-eight billion, three hundred eighteen million, three hundred thirty-one thousand, eight hundred eleven".