8138331 has 12 divisors (see below), whose sum is σ = 11793600. Its totient is φ = 5407920.

The previous prime is 8138323. The next prime is 8138363. The reversal of 8138331 is 1338318.

It is not a de Polignac number, because 8138331 - 2³ = 8138323 is a prime.

It is a super-2 number, since 2×8138331² = 132464862931122, which contains 22 as substring.

8138331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8138295 and 8138304.

It is not an unprimeable number, because it can be changed into a prime (8138371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1846 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^8138331 is an apocalyptic number.

8138331 is a deficient number, since it is larger than the sum of its proper divisors (3655269).

8138331 is a wasteful number, since it uses less digits than its factorization.

8138331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946 (or 2943 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 8138331 is about 2852.7760164443. The cubic root of 8138331 is about 201.1461771748.

The spelling of 8138331 in words is "eight million, one hundred thirty-eight thousand, three hundred thirty-one".