381143711 has 8 divisors (see below), whose sum is σ = 410816784. Its totient is φ = 351521280.

The previous prime is 381143671. The next prime is 381143713. The reversal of 381143711 is 117341183.

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 381143711 - 2⁶ = 381143647 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 (381143713) 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 7 ways as a sum of consecutive naturals, for example, 3776 + ... + 27866.

It is an arithmetic number, because the mean of its divisors is an integer number (51352098).

Almost surely, 2^381143711 is an apocalyptic number.

381143711 is a deficient number, since it is larger than the sum of its proper divisors (29673073).

381143711 is a wasteful number, since it uses less digits than its factorization.

381143711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25321.

The product of its digits is 2016, while the sum is 29.

The square root of 381143711 is about 19522.9022176520. The cubic root of 381143711 is about 725.0415900041.

Adding to 381143711 its reverse (117341183), we get a palindrome (498484894).

The spelling of 381143711 in words is "three hundred eighty-one million, one hundred forty-three thousand, seven hundred eleven".