381167131 has 4 divisors (see below), whose sum is σ = 381324600. Its totient is φ = 381009664.

The previous prime is 381167123. The next prime is 381167159. The reversal of 381167131 is 131761183.

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 381167131 - 2³ = 381167123 is a prime.

It is a super-2 number, since 2×381167131² = 290576763509542322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381167093 and 381167102.

It is not an unprimeable number, because it can be changed into a prime (381167231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75046 + ... + 79963.

It is an arithmetic number, because the mean of its divisors is an integer number (95331150).

Almost surely, 2^381167131 is an apocalyptic number.

381167131 is a deficient number, since it is larger than the sum of its proper divisors (157469).

381167131 is a wasteful number, since it uses less digits than its factorization.

381167131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157468.

The product of its digits is 3024, while the sum is 31.

The square root of 381167131 is about 19523.5020168002. The cubic root of 381167131 is about 725.0564401562.

The spelling of 381167131 in words is "three hundred eighty-one million, one hundred sixty-seven thousand, one hundred thirty-one".