319130721811 has 4 divisors (see below), whose sum is σ = 348142605624. Its totient is φ = 290118838000.

The previous prime is 319130721809. The next prime is 319130721827. The reversal of 319130721811 is 118127031913.

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 319130721811 - 2¹ = 319130721809 is a prime.

It is a super-4 number, since 4×319130721811⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (319130721011) 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 in 3 ways as a sum of consecutive naturals, for example, 14505941890 + ... + 14505941911.

It is an arithmetic number, because the mean of its divisors is an integer number (87035651406).

Almost surely, 2^319130721811 is an apocalyptic number.

319130721811 is a deficient number, since it is larger than the sum of its proper divisors (29011883813).

319130721811 is a wasteful number, since it uses less digits than its factorization.

319130721811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29011883812.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 319130721811 in words is "three hundred nineteen billion, one hundred thirty million, seven hundred twenty-one thousand, eight hundred eleven".