383778311 has 8 divisors (see below), whose sum is σ = 448804224. Its totient is φ = 321302520.

The previous prime is 383778293. The next prime is 383778337. The reversal of 383778311 is 113877383.

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

It is a de Polignac number, because none of the positive numbers 2^k-383778311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383778341) 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, 637205 + ... + 637806.

It is an arithmetic number, because the mean of its divisors is an integer number (56100528).

Almost surely, 2^383778311 is an apocalyptic number.

383778311 is a deficient number, since it is larger than the sum of its proper divisors (65025913).

383778311 is a wasteful number, since it uses less digits than its factorization.

383778311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275061.

The product of its digits is 84672, while the sum is 41.

The square root of 383778311 is about 19590.2606159285. The cubic root of 383778311 is about 726.7083367186.

The spelling of 383778311 in words is "three hundred eighty-three million, seven hundred seventy-eight thousand, three hundred eleven".