381131149 has 16 divisors (see below), whose sum is σ = 439257600. Its totient is φ = 323938944.

The previous prime is 381131129. The next prime is 381131167. The reversal of 381131149 is 941131183.

It is not a de Polignac number, because 381131149 - 2⁹ = 381130637 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 381131149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381131119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683979 + ... + 684535.

It is an arithmetic number, because the mean of its divisors is an integer number (27453600).

Almost surely, 2^381131149 is an apocalyptic number.

It is an amenable number.

381131149 is a deficient number, since it is larger than the sum of its proper divisors (58126451).

381131149 is a wasteful number, since it uses less digits than its factorization.

381131149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its digits is 2592, while the sum is 31.

The square root of 381131149 is about 19522.5804902938. The cubic root of 381131149 is about 725.0336244413.

The spelling of 381131149 in words is "three hundred eighty-one million, one hundred thirty-one thousand, one hundred forty-nine".