381143139 has 8 divisors (see below), whose sum is σ = 547282512. Its totient is φ = 234549600.

The previous prime is 381143131. The next prime is 381143149. The reversal of 381143139 is 931341183.

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

It is not a de Polignac number, because 381143139 - 2³ = 381143131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381143131) 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, 4886412 + ... + 4886489.

It is an arithmetic number, because the mean of its divisors is an integer number (68410314).

Almost surely, 2^381143139 is an apocalyptic number.

381143139 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

381143139 is a deficient number, since it is larger than the sum of its proper divisors (166139373).

381143139 is a wasteful number, since it uses less digits than its factorization.

381143139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772917.

The product of its digits is 7776, while the sum is 33.

The square root of 381143139 is about 19522.8875681852. The cubic root of 381143139 is about 725.0412273028.

The spelling of 381143139 in words is "three hundred eighty-one million, one hundred forty-three thousand, one hundred thirty-nine".